Back-end utvecklare - Lediga jobb

As a Backend Developer, your focus will be on implementing and maintaining backend systems. You will collaborate with architects, front-end developers, and firmware engineers to deliver robust and efficient software solutions. This role is ideal for someone who thrives in hands-on development and enjoys crafting high-quality code.

What You Will Do:

• Develop and maintain backend services and systems using Go.

• Implement solutions based on specifications provided by architects and stakeholders.

• Optimize code for performance, reliability, fault-tolerance, and maintainability.

• Collaborate with front-end developers, firmware engineers, and other stakeholders to deliver high-quality software solutions.

• Participate in code reviews and provide constructive feedback to team members.

Your Profile:

• Minimum of 2 years of experience in backend development; previous experience in Go Language is a merit.

• Experience with RESTful APIs and microservices.

• Proficiency in working with databases (PostgreSQL, Cassandra) and caching tools (Redis or comparable).

• Ability to work independently and as part of a team.

• Experience with streaming tools, such as Apache Kafka or similar, is a plus.

• Strong communication skills in English; proficiency in Swedish is a plus.

You will play a key role in designing, developing, and operating our backend system. You will work closely with our software and firmware teams to build reliable, scalable, and efficient services. Your experience in backend development, hosting environments, and operational tooling will be important in shaping and improving our platform.

What you will do:

• Design, develop, and maintain backend services and systems using Go and the Twelve-Factor App methodology.

• Design, develop, and maintain DevOps environments and processes; including solutions for CI/CD, release processes, monitoring, and alerting.

• Optimize software for performance, efficiency, reliability, and scalability.

• Troubleshoot and debug applications to ensure smooth functionality.

• Collaborate with front-end developers, firmware engineers, and other stakeholders to deliver high-quality software solutions.

• Participate in code reviews and provide constructive feedback to team members.

Your Profile

• Minimum of 5 years of experience in backend development.

• Experience with Go is a strong advantage. We also welcome candidates with solid backend experience in other typed backend languages.

• Experience and familiarity with concurrent and asynchronous programming.

• Proven experience with RESTful API design and implementation.

• Strong familiarity with Linux-based IT systems and hosting environments. Some familiarity with cloud service providers (AWS, Azure, or Google Cloud) is beneficial.

• Experience with distributed systems and cloud-native applications; including common challenges around reliability, coordination, and data consistency.

• Strong knowledge of databases (PostgreSQL, Cassandra) and expertise with in-memory caching solutions (Redis or comparable).

• Experience with distributed event-streaming and messaging systems, such as Apache Kafka or NATS.

• Experience working with version control systems (Git) in collaborative environments, including understanding different workflow strategies and their trade-offs.

• Excellent problem-solving skills and attention to detail with the ability to make sound trade-offs based on business needs and technical requirements.

• Ability to work independently and as part of a team.

• You communicate clearly and are comfortable supporting and mentoring less experienced developers.

• Strong communication skills in English (written and spoken); proficiency in Swedish is a plus.

You will play a key role in designing, developing, and validating our backend system. You will work closely with our software and firmware teams to develop reliable, scalable backend services with a strong focus on quality, testing, and automation. Your experience in backend development and test engineering will be important in shaping and improving our platform.

What you will do:

• Design, develop, and maintain backend services and systems using Go and the Twelve-Factor App methodology.

• Design, develop, and maintain automated test frameworks, test environments, and validation processes for backend systems and services.

• Define and implement test strategies covering functionality, integration, system, regression, and performance testing.

• Build tools and test harnesses to verify the reliability, scalability, and correctness of distributed systems.

• Optimize software for performance, efficiency, reliability, and scalability.

• Troubleshoot, debug, and analyze applications and test results to ensure smooth functionality.

• Collaborate with front-end developers, firmware engineers, and other stakeholders to deliver high-quality software solutions.

• Participate in code reviews and provide constructive feedback to team members.

Your Profile

• Minimum of 5 years of experience in backend development, test engineering, or a similar role.

• Experience with Go is a strong advantage. We also welcome candidates with solid backend experience in other typed backend languages.

• Experience designing and implementing CI-based test execution for backend systems and distributed applications.

• Experience and familiarity with concurrent and asynchronous programming.

• Proven experience with RESTful API design, implementation, and testing.

• Strong familiarity with Linux-based IT systems and test or hosting environments.

• Knowledge of databases (PostgreSQL, Cassandra) and expertise with in-memory caching solutions (Redis or comparable).

• Experience with distributed event-streaming and messaging systems, such as Apache Kafka or NATS.

• Experience working with version control systems (Git) in collaborative environments.

• Excellent problem-solving skills and attention to detail, with the ability to make sound trade-offs based on business needs and technical requirements.

• Ability to work independently and as part of a team.

• You communicate clearly and are comfortable supporting and mentoring less experienced developers.

• Strong communication skills in English, written and spoken. Proficiency in Swedish is a plus.

Wrknest Engineering is now recruiting on behalf of a global product company in networking and connected hardware. They are now making a strategic investment in Stockholm and expanding their Go engineering capability within a business-critical domain.

You will join a product area focused on identity, permissions, and access management across a large-scale ecosystem of hardware, cloud services, web, and mobile applications. The team is building the next generation of systems that decide who gets access to what, when, and how across devices, networks, and administrative platforms.

The company combines the pace and ownership of a startup with the scale, resources, and global reach of an established international tech business. Their engineering culture is highly product-oriented, hands-on, and deeply focused on user experience, even in backend-heavy domains. They care about building systems that are elegant, intuitive, and genuinely useful in the real world.

This role is ideal for someone who wants to work close to real products, real users, and technical decisions that have immediate impact.

You will be part of a specialized backend team building new services in Go, with a strong focus on cloud-connected identity systems and access control. The role includes both new development and architectural improvements in an evolving environment where priorities can shift quickly.

In this position, you will for example:

• Design and develop backend services in Go

• Build systems for identity, authorization, roles, and permissions

• Help define what data should be persisted in AWS-based cloud services

• Improve systems that manage access across devices, networks, and admin platforms

• Work closely with product leadership and senior engineers on new technical direction

• Contribute to architecture decisions with a pragmatic, product-first mindset

• Collaborate cross-functionally with cloud, mobile, web, and embedded-adjacent teams

• Continuously prioritize, reduce risk, and make fast engineering decisions in a dynamic environment

• Has at least 3 years of professional experience in Go development

• Has a backend engineering background in distributed or cloud-connected systems

• Has experience building identity, authentication, authorization, or access management solutions

• Has experience with AWS or similar cloud environments

• Has professional experience in production environments with high availability requirements

• Has strong communication skills in English, written and spoken

• Has experience integrating with SSO, SCIM, Entra ID, Okta, Google Workspace, or similar identity providers

• Has experience from product companies with hardware-connected software ecosystems

• Has previous background as a consultant or experience across multiple technical environments

• Has experience from fast-paced scaleups or founder-led product organizations

• Has broader software engineering experience from languages beyond Go

You are someone who thrives in environments with high ownership and moving parts. To succeed here, you need to enjoy taking initiative, asking questions, and moving forward without needing every detail mapped out from day one.

They are looking for someone who is ambitious, highly pragmatic, and excited by solving real user problems through technology. A genuine interest in networking, connected devices, and product experience will be a strong advantage.

According to agreement

Office in central Stockholm. Hybrid setup with at least one day per week in the office.

Full-time

Permanent recruitment via Wrknest

The client is a globally recognized technology company building products used by businesses and consumers worldwide. Their ecosystem spans connected hardware, cloud services, mobile apps, web platforms, and large-scale management systems.

Despite their global scale, the Stockholm office offers a close-knit and entrepreneurial engineering culture. Teams are trusted with significant ownership, fast decision-making, and the mandate to build better solutions from the ground up.

Their products solve real-world infrastructure challenges, and engineering teams are encouraged to think beyond isolated services to the full customer experience. The environment suits developers who care deeply about both technical quality and product outcomes.

Wrknest Engineering specializes in helping engineers and technical professionals take the next step in their careers. We collaborate with forward-thinking companies and offer both recruitment and consulting assignments within technology and industry—always with people at the center.

We believe in building long-term relationships and strive to be an engaged and attentive partner. Through us, you’ll have the opportunity to be part of technological advancements that shape the society of tomorrow—in roles where your expertise makes a real difference.

Our ambition is for you to thrive, grow, and feel proud of your work. Learn more at www.wrknestengineering.se

You will play a key role in designing, developing, and validating our backend system. You will work closely with our software and firmware teams to develop reliable, scalable backend services with a strong focus on quality, testing, and automation. Your experience in backend development and test engineering will be important in shaping and improving our platform.

What you will do:

• Design, develop, and maintain backend services and systems using Go and the Twelve-Factor App methodology.

• Design, develop, and maintain automated test frameworks, test environments, and validation processes for backend systems and services.

• Define and implement test strategies covering functionality, integration, system, regression, and performance testing.

• Build tools and test harnesses to verify the reliability, scalability, and correctness of distributed systems.

• Optimize software for performance, efficiency, reliability, and scalability.

• Troubleshoot, debug, and analyze applications and test results to ensure smooth functionality.

• Collaborate with front-end developers, firmware engineers, and other stakeholders to deliver high-quality software solutions.

• Participate in code reviews and provide constructive feedback to team members.

Your Profile

• Minimum of 5 years of experience in backend development, test engineering, or a similar role.

• Experience with Go is a strong advantage. We also welcome candidates with solid backend experience in other typed backend languages.

• Experience designing and implementing CI-based test execution for backend systems and distributed applications.

• Experience and familiarity with concurrent and asynchronous programming.

• Proven experience with RESTful API design, implementation, and testing.

• Strong familiarity with Linux-based IT systems and test or hosting environments.

• Knowledge of databases (PostgreSQL, Cassandra) and expertise with in-memory caching solutions (Redis or comparable).

• Experience with distributed event-streaming and messaging systems, such as Apache Kafka or NATS.

• Experience working with version control systems (Git) in collaborative environments.

• Excellent problem-solving skills and attention to detail, with the ability to make sound trade-offs based on business needs and technical requirements.

• Ability to work independently and as part of a team.

• You communicate clearly and are comfortable supporting and mentoring less experienced developers.

• Strong communication skills in English, written and spoken. Proficiency in Swedish is a plus.

As a Backend Developer, your focus will be on implementing and maintaining backend systems. You will collaborate with architects, front-end developers, and firmware engineers to deliver robust and efficient software solutions. This role is ideal for someone who thrives in hands-on development and enjoys crafting high-quality code.

What You Will Do:

• Develop and maintain backend services and systems using Go.

• Implement solutions based on specifications provided by architects and stakeholders.

• Optimize code for performance, reliability, fault-tolerance, and maintainability.

• Collaborate with front-end developers, firmware engineers, and other stakeholders to deliver high-quality software solutions.

• Participate in code reviews and provide constructive feedback to team members.

Your Profile:

• Minimum of 2 years of experience in backend development; previous experience in Go Language is a merit.

• Experience with RESTful APIs and microservices.

• Proficiency in working with databases (PostgreSQL, Cassandra) and caching tools (Redis or comparable).

• Ability to work independently and as part of a team.

• Experience with streaming tools, such as Apache Kafka or similar, is a plus.

• Strong communication skills in English; proficiency in Swedish is a plus.

We are super excited to announce that Alexander, Stefan, Raveena, Bowen, Stanislav, Louise, Fernando and Robin are looking to welcome their next colleague to Team Bonnie.

At Voyado, we’re building Bonnie — our AI agent and conversational layer across our platform. Bonnie helps users work smarter by understanding intent, remembering context, and taking action across the product.

As AI continues to reshape how people interact with software, we’re exploring what great AI-powered product experiences should look like. How should AI capabilities be organised? What belongs in backend systems and orchestration? What belongs in the user experience?

The answers are still evolving and that’s what makes this role exciting.

We’re looking for a senior engineer who wants to help shape the future of Bonnie and AI at Voyado. Someone who enjoys building practical AI-powered products, solving complex backend challenges and working in an area where technology, ways of working, and team structures are still taking shape.

This role sits at the intersection of software engineering, AI adoption, and product development.

You’ll help build the foundations that power Bonnie today while shaping the systems, workflows, and capabilities that will enable future AI experiences across Voyado.

Bonnie is live, growing fast, and continuously evolving. The roadmap is real, but not every path is fully defined. We’re looking for someone who thrives in that environment, someone who can turn ambiguity into progress and help create structure where none exists yet.

• Evolve the backend architecture behind Bonnie’s AI and agent capabilities.

• Build orchestration systems, AI workflows, and platform capabilities that enable scalable AI experiences.

• Turn AI experiments into reliable production-ready solutions.

• Collaborate closely with product managers, designers, and engineers across multiple teams.

• Drive technical direction and helping shape how AI capabilities are integrated across the Engage platform.

• Work on initiatives similar to AI Segmentation, AI Translation, AI Content generation, MCP and future AI-powered experiences.

You’re a senior software engineer with a strong backend foundation and a genuine interest in AI.

You don’t need to be an AI researcher, but you have embraced AI as part of your everyday work. Maybe you’ve introduced AI tools to your team, built AI-powered features, or driven AI adoption in some capacity.

You enjoy working with a high degree of ownership, partnering closely with product managers, and taking ideas from early concepts all the way to production.

• 5+ years of experience building backend systems in production environments.

• Strong software engineering fundamentals and architectural thinking.

• Experience working with cloud-based systems and services.

• Practical experience using AI tools, coding assistants, or AI workflows.

• An interest in AI-powered products and how they can create real customer value.

• The ability to navigate ambiguity and break down complex problems into actionable steps.

• A collaborative mindset and a willingness to share knowledge and help others succeed.

You’ll join a company with strong momentum, modern technology, and a collaborative culture where ideas and initiatives are encouraged.

At Voyado, we care about creating an environment where people can grow, collaborate, and enjoy the journey together. We move quickly, challenge ideas, and work closely across teams to deliver meaningful impact.

Some of our benefits:

• 30 days of vacation

• Wellness allowance

• Personal development opportunities

• Summits and team activities

• Four days from the office and one day from home

Voyado is the Agentic Customer Experience Suite for retail.

More than 500 retail brands across 100 markets use Voyado to unite CRM, loyalty, product discovery, e-commerce personalization, and retail media with retail-trained AI that acts on real-time shopper intent.

By combining customer data with product intelligence, Voyado helps retailers deliver more relevant experiences across every channel — online and in-store. The result is more traffic, higher conversions, stronger customer relationships, and measurable business impact.

We’re growing across Europe and are looking for people who want to help shape the future of retail technology.

Fantastic! 🎉

A quick note about our recruitment timeline: As many of us will be taking some well-deserved summer vacation, this process will move a bit slower than usual.

We’d still love to hear from you as soon as possible! We’ll be holding initial screening conversations before July 13, after which we’ll take a short summer break. First-round interviews will begin from July 27 onwards.

Thank you for your understanding, and we hope you’ll apply! 🌞

As part of our recruitment process, we conduct a background check on the final candidate.

We believe you’ll position yourself best for success in the interview process by being yourself, with support from AI where it makes sense. Later in the process, you may even be expected to use AI. At the end of the day, what matters is meeting you — the person behind the application.

There is no such thing as a perfect candidate; we’re all human, so please bring your authentic self. Don’t let AI over-polish your CV or answers to the point where we can’t hear your real voice, because that’s what we care about most.

ABOUT SINCH

Sinch is pioneering the way the world communicates. More than 150,000 businesses -- including Google, Uber, PayPal, Visa, Tinder, and many others -- rely on Sinch's Customer Communications Cloud to power engaging customer experiences through mobile messaging, voice, and email.

Whether you need to verify users or craft omnichannel campaigns, Sinch makes it easy. Our AI-infused Super Network, APIs, and applications ensure you can connect with your customers reliably and securely, at every step of their journey.

At Sinch we "Dream Big", "Win Together", "Keep it simple", and "Make it Happen". These values are our foundation!

DESCRIPTION

Join our Messaging Provisioning Engineering team as a Backend Developer in Malmö. This is a hybrid role, with the team working together from the office three (3) days per week. You’ll collaborate in an agile, cross-functional environment to turn user stories into testable, maintainable systems that run at scale.

It’s a hands-on role where you will design and build new features, APIs, and CI/CD pipelines from scratch. You will help raise the bar on engineering practices like test-driven development, designing performance, and building self-healing systems.

• Collaborate closely with Developers, Product Managers and Tech Leads to translate product needs into effective, high-quality technical solutions.
• Build and maintain clean, efficient, and scalable code that enhances system performance and user experience.
• Own your work end-to-end - proactively identify and resolve issues and take responsibility for monitoring and maintaining your software in production.
• Participate actively in code reviews and share your knowledge to help elevate team standards.
• Take initiative to lead projects or features, driving them from early concept through to successful delivery.

REQUIREMENTS

• Minimum 5 years of professional software development experience, with a strong focus on backend development.
• Strong, hands-on experience with TypeScript/JavaScript and NodeJS.
• A pragmatic approach to architecture and broad experience of designing REST APIs.
• You are comfortable operating in AWS cloud environment and have practical experience with Docker and Kubernetes.
• You are familiar with database design and have worked with both relational and NoSQL databases (e.g., PostgreSQL, MongoDB).

Our corporate language is English, please submit your application in English.

Must currently reside in and be eligible for employment in Malmö, Sweden.

Relocation and visa sponsorship are not available for this role.

OUR HIRING PROCESS

We are committed to ensuring a recruitment process that is fair, objective, consistent, and inclusive. Our approach includes structured, competency-based interviews designed to evaluate your skills, experience, and qualifications relevant to the role. At times, we may include a data-driven assessment to enhance our hiring success and identify candidates likely to excel.

We believe in a two-way process and encourage you to ask questions throughout the journey. If this role isn't what you're looking for, please explore the other opportunities listed on our career page: https://www.sinch.com/careers/. No matter who you are, we hope you find an exciting path forward - hopefully with us!

You know that bit where every company says they’re “changing the world”? Yeah, it can feel a little forced. But we like to think our story actually has some realness to it.

Our story begins with Shadi Bitar and Ninos Malki, who came to Sweden from Syria as kids and discovered that books could be a bridge – helping them learn the language, understand the culture, and explore new worlds.

A thought emerged, what if everyone could have that? And just like that, Nextory was born – your all-access pass to read, listen, and discover new perspectives without limits.

And now, we’re searching for a Product Engineer with backend focus who’s ready to lead the way in our app development.

Let us tell you about the role 📖 As a Product Engineer with a backend focus at Nextory, you will be involved throughout the entire product development journey, from exploring ideas and understanding user needs to implementation, launch, and continuous improvement. You will join the team responsible for Nextory’s recommendation and discovery experiences, helping readers find the right content at the right time.

We believe that the future of software engineering is more about authoring intent than writing lines of code.

You will work across the stack with a primary focus on backend development, integrations, data-driven features, and building reliable, scalable systems. Together with product managers, designers, data scientists, and fellow engineers, you will develop and improve recommendation solutions that create real value for our users. You'll have the opportunity to grow your technical skills, deepen your product understanding, and make a meaningful impact on how users discover books and stories on our platform.

Your story so far 👀 We believe you are a curious and product-minded engineer. You thrive in collaborative environments and are just as comfortable collaborating with humans as you are working alongside AI-powered tools, agents and workflows to scale your own impact.

Furthermore, we believe you have:

• BSc in Computer Science or another relevant field, or equivalent work experience.

• Around 3 years experience with backend development

• Experience with Java

• A strong understanding of distributed systems, microservices patterns, and how to build for scalability and resilience.

These are a few of the technologies we work with We don’t expect you to have experience with everything that we’re using. We care more about having strong engineering fundamentals and a curiosity to learn.

Backend: Java Cloud & Infrastructure: Google Cloud Platform, Kubernetes, Docker, Terraform Databases, Caching & Messaging: PostgreSQL, MongoDB, Redis, Kafka

The Nextory way of working 🏠 At Nextory, we believe a strong and inclusive culture is key to our success – and that culture flourishes when we meet and collaborate in person as much as possible. Our hybrid work policy includes four days in the office and Wednesdays as a work-from-home day.

We are based in Stockholm, Sweden, with offices in Paris and Bangalore.

Your next story starts here We look forward to your application 💫. Applications are reviewed continuously, but please note that due to summer vacations, our response times may be a little longer than usual. If you have any questions about the role, please contact erika.thorslund@nextory.com.

Please note that we do not offer relocation and that a six-month probationary period applies.

You know that bit where every company says they’re “changing the world”? Yeah, it can feel a little forced. But we like to think our story actually has some realness to it.

Our story begins with Shadi Bitar and Ninos Malki, who came to Sweden from Syria as kids and discovered that books could be a bridge - helping them learn the language, understand the culture, and explore new worlds.

A thought emerged, what if everyone could have that? And just like that, Nextory was born - your all-access pass to read, listen, and discover new perspectives without limits.

And now, we're on a quest to find a Machine Learning Engineer. 

Let us tell you about the role 📖 As a Machine Learning Engineer at Nextory, you'll build the systems that power how users discover, understand, and engage with books. You'll work across AI agents, search, recommendations, retrieval, and product experiences, turning advances in AI into features that users interact with every day.

Some examples of what you'll be doing:

• Build intelligent recommendation, search, and discovery systems that help users find their next favorite book and connect with the right content faster.

• Use AI, user behavior, and content understanding to continuously improve relevance, engagement, and user experience.

• Design, build, and operate scalable machine learning systems using LLMs, retrieval, recommendation, and agent technologies.

• Collaborate across product and engineering teams to deliver reliable AI-powered features with measurable user impact.

Your story so far 👀 We believe you're an experienced engineer who enjoys solving complex problems and turning emerging technology into products that people love using. You are comfortable moving between product thinking and technical implementation, and you thrive in environments where experimentation, ownership, and fast iteration are part of everyday work.

We also believe that you have:

• BSc in Computer Science or another relevant field, or equivalent work experience.

• At least 3 years of experience in a similar role

• Strong programming skills in Python.

• Experience working with AI agents and agent-based systems.

• Experience building and shipping LLM-powered features to production.

The Nextory way of working 🏠 At Nextory, we believe a strong and inclusive culture is key to our success and that culture flourishes when we meet and collaborate in person as much as possible. That’s why we spend the majority of the working time at our beautiful office!

We are based in Stockholm, Sweden, with offices in Paris and Bangalore. Our hybrid work policy includes four days in the office and Wednesdays as a work-from-home day.

Your next story starts here 💫 We look forward to your application 💫. Applications are reviewed continuously, but please note that due to summer vacations, our response times may be a little longer than usual. If you have any questions about the role, please contact erika.thorslund@nextory.com.

Please note that we do not offer relocation and that a six-month probationary period applies.