Senior Software Engineer at Trustly | Stockholm, Sweden

Supernormal develops AI-powered tools designed to make work simpler and more productive. The team prioritizes practical technology that streamlines workflows and encourages collaboration, aiming to help teams achieve strong results without unnecessary complexity. Role overview The Backend Software Engineer will have a key role in shaping the AI backend at Supernormal. The position involves leading technical projects from start to finish, guiding architectural decisions, and mentoring other engineers. Reporting to the Head of Engineering, this engineer will collaborate closely with colleagues across engineering, product, and design teams. This role suits someone who enjoys taking ownership, influencing core backend systems, and maintaining quality throughout the stack. The work combines hands-on engineering with technical leadership. What you will do Design, build, and maintain scalable backend services and APIs for Supernormal’s main product. Take responsibility for backend features from technical planning and implementation to testing and monitoring in production. Work with frontend engineers and product teams to define and document API contracts. Troubleshoot and resolve performance, reliability, and scaling issues. Participate in code reviews and help set strong engineering practices for a high-quality codebase. Contribute to infrastructure decisions, including cloud architecture, deployment pipelines, observability, and on-call processes. Requirements Minimum 6 years of professional experience in backend software engineering, with strong knowledge of distributed systems and API design. Proficiency with large codebases in Rust, TypeScript, and Ruby. Experience building and running production systems at scale, with a sense of ownership for shipped applications. Solid understanding of cloud infrastructure (AWS, GCP, or Azure), containerization, and CI/CD workflows. Comfortable working in a small, adaptable team with shifting priorities and broad responsibilities. Clear communication skills and the ability to collaborate across disciplines. Proactive and action-oriented, with a preference for simplicity and iteration over complexity. Preferred qualifications Experience with real-time data processing, streaming architectures such as Kafka or Pub/Sub, or WebSockets. Familiarity with speech-to-text APIs like Deepgram. Location This position is based in Stockholm, Stockholm County, Sweden.

Are you eager to tackle exciting challenges in a dynamic, high-transaction environment? We are on the lookout for an innovative and proactive Backend Software Engineer to join our team. If you have a passion for creating exceptional products and thrive on collaboration, we want to hear from you!The RoleJoin our Player, Rewards & Gamification Product Development team in Stockholm! At Betsson Group, we focus on ensuring customer loyalty through an outstanding customer experience that extends beyond gameplay, featuring tournaments, dynamic personalized campaigns, and much more.As part of our journey towards containerization, you'll play a key role in enhancing the scalability and quality of our systems while adapting to new requirements and working on exciting new features.What You’ll DoDesign and develop distributed backend services using .NET and event-driven architecture.Collaborate with product and commercial teams to transform engagement ideas into scalable, maintainable, and user-friendly solutions.Optimize our microservice ecosystem for performance, reliability, and observability.Advance our containerization and cloud migration strategy.Engage in architectural discussions and contribute to shaping technical decisions.For senior engineers: Lead architectural decisions and proactively identify areas for improvement.Write maintainable, well-tested code and conduct thorough code reviews.Participate in incident resolution and share in the team’s on-call rotation.Maintain comprehensive technical documentation, including ADRs, runbooks, and guidelines.Develop and share your domain expertise within the team.

Role Overview evolution is hiring a Senior Backend Engineer in Stockholm. This role focuses on designing and implementing backend systems that support the company's products. Collaboration with teams across disciplines is part of the daily work, with an emphasis on building applications that perform reliably at scale.

Are you a talented Backend Software Engineer with a passion for Web3 technologies and their application in the iGaming industry? If so, we have an exciting opportunity for you! Join us at Betsson as we embark on our journey to develop groundbreaking iGaming products and brands, utilizing the innovative potential of Web3.Your RoleAs a Backend Developer, you will play a crucial role in developing the server-side code and APIs for our web applications. Collaborating closely with our development team, you will ensure system consistency and contribute to delivering an exceptional user experience.Key ResponsibilitiesEngage in sprint planning, task estimation, software development testing, code reviews, and deployment.Maintain and enhance existing software applications.Design code and implement unit tests.Manage SQL and NoSQL data models effectively.

Overview: We are on the lookout for talented Backend Product Engineers to join our team and shape the future of artificial intelligence. You will engage with our entire technology stack to develop features that will empower the next generation of creators and innovators.Why Join Lovable?At Lovable, we empower individuals to create software with simple, plain English. From solo entrepreneurs to Fortune 100 companies, millions have utilized Lovable to metamorphose raw ideas into tangible products swiftly. We are pioneering a revolutionary shift in software development, offering you a unique chance to redefine the digital landscape. Over 2 million users across 200+ countries leverage Lovable to launch businesses, tackle complex challenges, and realize their aspirations. And this is just the beginning.Our small, exceptionally skilled team is building a transformative company headquartered in Stockholm. We prioritize ownership, speed, and collaborative, low-ego teamwork. We are searching for individuals who are passionate, willing to challenge norms, and eager to create something impactful.What We Seek5+ years of experience in designing, building, and scaling backend systems for production-level productsProficient in Go, Rust, or other similar backend programming languages, with strong API design capabilitiesThorough understanding of distributed systems, scalability, reliability, and performance trade-offsDemonstrated experience in integrating with frontend and machine learning systems to deliver product featuresPossess strong product instincts, with the ability to balance rapid delivery with long-term sustainabilityYour ResponsibilitiesIn brief: Develop and empower the core of Lovable products, ensuring they are swift, reliable, and capable of supporting millions of users.Design, implement, and maintain backend services, APIs, and infrastructure componentsTake complete ownership of backend systems: architecture, implementation, deployment, monitoring, and iterationWork closely with frontend, machine learning, and product teams to turn ideas into robust, scalable featuresContribute to shaping our backend architecture, engineering culture, and technical strategyOur Technology StackWe utilize tools that both humans and AI appreciate:Frontend:...

airapps is looking for a Backend Engineer to help build and support the server-side systems behind our products. This position is based in Stockholm and involves working closely with other teams to deliver new features and maintain reliable backend services. Role overview This role centers on developing and maintaining backend applications that support our solutions. The work involves both creating new features and ensuring existing systems remain stable and scalable. Collaboration Backend Engineers at airapps work with colleagues across different functions. Expect to partner with product, design, and frontend teams to define requirements and deliver updates that meet user needs. What you will do Develop and maintain server-side applications Work with others to design and implement new product features Focus on code quality and system scalability

Join Our Team at SanaSana is an innovative AI laboratory dedicated to creating superintelligent solutions for enhancing workplace productivity. We believe that organizations can achieve their goals more efficiently when teams access knowledge seamlessly, automate mundane tasks, and leverage the power of agentic AI for continuous learning. As a proud member of Workday, we are on a mission to develop AI that complements human capabilities rather than replacing them.Our vision is brought to life through our two flagship products. Sana Agents streamline access to your organization’s applications, knowledge, and data, allowing AI agents to perform meaningful work and enabling teams to process and act on information at an unparalleled scale. Sana Learn serves as an AI-driven learning platform, blending the ease of a modern educational tool with intelligent features like AI tutoring, automated content creation, and interactive applications, ensuring knowledge is not only accessible but also actionable.Our team is composed of highly skilled engineers and designers from top-tier companies such as Google, Spotify, Apple, and Databricks, all driven by a shared commitment to technical excellence and rapid iteration. Our tools currently empower over a million users to enhance their learning and work processes across hundreds of leading enterprises, and we are just getting started.About the RoleYou will play a pivotal role in developing and optimizing the core backend systems that support Sana’s Learn platform and search infrastructure. Your mission will be to redesign and scale these systems to efficiently handle enterprise-level workloads, eliminate bottlenecks, and evolve our architecture to meet the demands of the AI era.ResponsibilitiesTransform existing components to accommodate enterprise-scale workloads.Identify and address bottlenecks in storage, query performance, APIs, and data models.Lead the transition from outdated systems to sustainable, modern solutions.Enhance the reliability and efficiency of APIs.

Join Us at LegoraAt Legora, we are revolutionizing the legal industry by collaborating closely with legal professionals to create innovative solutions. Our AI-driven workspace not only enhances the speed of legal tasks but also empowers users to ask insightful questions and unlock valuable insights. Each day, we strive to push the limits of legal technology, transforming intricate processes into streamlined, efficient workflows. Our trusted partnerships with top global firms like Cleary Gottlieb, Goodwin, Bird & Bird, and Linklaters across 40 countries reflect our commitment to excellence.Joining Legora means becoming part of a team that believes in excellence and collaboration. If you are passionate about building innovative solutions from the ground up in a fast-paced environment, we invite you to be a part of this exciting journey.The OpportunityAs a Senior Backend Engineer, you will play a crucial role in designing, developing, and delivering outstanding products that assist legal professionals worldwide in their daily operations. You will have the autonomy to work across the entire technology stack and take full ownership of your contributions.This position is based in our Stockholm headquarters and requires in-office attendance five days a week, as we believe that collaboration in person yields the best results.Your ResponsibilitiesDesign and implement new features for our web platform.Take charge of our codebase, ensuring high-quality code, security, and rapid development cycles.Utilize a range of technologies including Node.js, Postgres, Elasticsearch, AWS, Azure, and Kubernetes.Conduct code reviews and mentor junior engineers to foster team growth and improvement.Promote continuous improvement initiatives and challenge the status quo within the team.Are you ready to shape the future of legal technology with us?

About SanaSana is an innovative AI laboratory dedicated to creating superintelligence solutions for the workplace. We believe that organizations can achieve their goals more efficiently when teams have seamless access to knowledge, can automate repetitive tasks, and have the ability to learn anything through agentic AI. As a subsidiary of Workday, our mission is to develop AI that enhances human capabilities rather than replacing them.Our vision is realized through two flagship products: Sana Agents and Sana Learn. Sana Agents provide a streamlined interface to access all company applications, knowledge bases, and data, empowering AI agents to perform meaningful work and enabling teams to process and act on information at an unprecedented scale. Sana Learn is an AI-driven learning platform that fuses the ease of modern learning environments with intelligent features such as an AI tutor, automated content creation, and interactive applications, transforming knowledge into actionable insights.We are a team of highly skilled engineers and designers from top-tier companies like Google, Spotify, Apple, and Databricks, all driven by a passion for technical excellence and rapid innovation. Our tools already support over a million users to enhance their learning and work efficiency across hundreds of leading enterprises, and we are just getting started.About the RoleAs a Backend Engineer, you will be instrumental in building and enhancing the core services that power our agents and product features, focusing on enterprise-scale workloads, performance optimization, and sustainable architecture. You will lead the architecture and system design to ensure our platform can accommodate high data volumes, diverse entities, and meet the demands of enterprise clients.Key ResponsibilitiesDesign and decompose services and APIs for scalability and clarity.Develop eventing and queue systems for reliable, high-throughput data flows.Oversee schema evolution, migrations, query/index optimization, and caching strategies.Establish and enforce consistency models and multi-region readiness.Optimize for performance budgets and privacy/tenant isolation.Work hands-on with TypeScript/Node, Postgres, and distributed systems.Success MetricsCore services are dependable, scalable, and easily adaptable.Potential risks are identified and mitigated proactively.APIs are clear, well-documented, and facilitate seamless product experiences.

Join Us in Transforming Legal WorkAt Legora, we are committed to revolutionizing the way legal professionals operate. We don’t just create solutions for lawyers; we collaborate with them to ensure our tools are effective and user-centric. Our innovative AI-driven workspace enhances the efficiency of legal workflows, enabling professionals to ask insightful questions and unlock valuable insights. With our cutting-edge technology, we simplify complex legal processes, empowering users to analyze thousands of documents in mere minutes and design intelligent workflows in partnership with leading legal practices.Trusted by prestigious firms like Cleary Gottlieb, Goodwin, Bird & Bird, and Linklaters across over 40 countries, we are on an ambitious growth trajectory. Our agile approach to product development emphasizes rapid shipping, effective iteration, and strategic scaling.Joining Legora means becoming part of a team that refuses to settle for mediocrity. We believe in the power of collaboration and technology to elevate the legal profession. If you are passionate about building innovative solutions, working alongside talented individuals, and shaping a high-impact sector, we want to hear from you!About the RoleLegora AB is seeking a Staff Software Engineer to lead the delivery of significant features and develop scalable systems. In this senior role, you will oversee the end-to-end process of technical solutions, from design to deployment, while fostering innovation through close collaboration with Product, Engineering, and other teams.Your ResponsibilitiesDesign, architect, and implement new features with a strong focus on performance, quality, and stability.Work collaboratively across departments to convert business requirements and product concepts into solid technical solutions.Guide engineering teams through the complete software development lifecycle, from ideation and planning to development, launch, and continuous improvement.Promote automation and process enhancements that expedite feature delivery and uphold technical standards.Maintain high standards for code quality, documentation, and compliance throughout the development process.

Evolution is looking for a Software Engineer to join the team in Stockholm. This position centers on building and improving gaming platforms, with an emphasis on developing reliable software and collaborating across teams. Key responsibilities Develop software to support and enhance gaming products Work closely with engineers, designers, and other specialists from different teams Take part in designing, implementing, and maintaining software systems Requirements Proven experience in software development Interest in tackling challenging projects Comfort working within a team Motivation to learn and adapt to new technologies Location This role is based in Stockholm.

Join a Transformative CompanyAt Palantir, we develop cutting-edge software solutions that enable data-driven decision-making and optimize operations across various sectors. Our platforms empower partners to create lifesaving medications, predict supply chain challenges, locate missing persons, and tackle numerous other critical issues.The OpportunityAs a Forward Deployed Software Engineer (FDSE), you'll collaborate directly with clients to swiftly analyze their most pressing challenges and architect innovative solutions utilizing data. Our partners depend on Palantir's platforms for essential operations, often initiating projects with broad inquiries such as, “What causes our flight delays?” or “How can we enhance our detection of financial fraud?” As an FDSE, you'll leverage your analytical skills, creativity, and technical expertise to enable organizations to harness their data for meaningful impact. You'll gain invaluable insights into and contribute to some of the most critical industries and institutions globally.Your role will closely resemble that of a startup CTO: you will operate in small teams with a high degree of autonomy, managing the entire lifecycle of significant projects. Your daily tasks may include collaborating on architectural decisions with fellow engineers, handling large-scale data, developing custom web applications, engaging with client executives, and strategizing for your team’s objectives.Whether your aspirations lie in entrepreneurship or engineering leadership, Palantir is the ideal environment — surrounded by exceptional colleagues — to refine your skills. You will learn to dissect complex problems and assess the implications of various solutions. You will explore emerging technologies and programming languages, and even contribute to their development. Work independently, make impactful decisions, all within a community that will encourage and challenge your growth.

About Our Team:Join X5 Music Group, a prominent force in the music industry based in Stockholm. We combine the dynamic energy of a startup with the robust support and resources of Warner Music Group. Our mission is to create and deliver innovative music products to major platforms, utilizing our custom-built application suite. Our passionate team merges technical skill with musical knowledge to enhance the connection between music lovers and their favorite tunes. We offer a hybrid work model and a modern office with stunning views of central Stockholm.Your Role:As a .NET Software Engineer at X5, you will play a pivotal role in developing our music business application suite, which is critical for curating top-tier music products from our extensive catalog while analyzing trends and financial data for our stakeholders, including record labels and artists. You will collaborate within a small, dedicated team of engineers, working closely with application users and stakeholders. Your responsibilities will include immersing yourself in business processes, ensuring seamless operation, and driving continuous improvement for our applications.

About Applied IntuitionApplied Intuition, Inc. is at the forefront of advancing physical AI technologies. Established in 2017 and currently valued at $15 billion, our Silicon Valley-based firm is dedicated to developing the essential digital framework that will integrate intelligence into every moving machine worldwide. Our innovative solutions cater to the automotive, defense, trucking, construction, mining, and agriculture sectors, focusing on three main areas: tools and infrastructure, operating systems, and autonomy. Trusted by eighteen of the top twenty global automakers, alongside the United States military and its allies, we provide cutting-edge solutions designed to deliver physical intelligence. With headquarters in Sunnyvale, California, and additional offices in Washington, D.C.; San Diego; Fort Walton Beach, Florida; Ann Arbor, Michigan; London; Stuttgart; Munich; Stockholm; Bangalore; Seoul; and Tokyo, we invite you to explore more about us at applied.co.Our company thrives on in-office collaboration, with an expectation for employees to work from their Applied Intuition office five days a week. We value flexibility and encourage our employees to manage their schedules responsibly, allowing for occasional remote work, morning meetings from home, or early departures for family commitments.Meet Our Software Engineers!Discover the stories of our software engineers who are shaping the future of autonomy and providing world-class solutions that help clients accelerate their time to market. Learn about their journeys to Applied Intuition, what keeps them engaged, and their insights for prospective candidates.

Join Evolution Gaming as a Senior Software Engineer and be part of a dynamic team that is revolutionizing the gaming industry. You will play a crucial role in designing and developing high-performance software solutions that enhance user experience and drive innovation.

At Kognity, we believe education has the power to transform lives. However, technology has yet to fulfill its promise for over a billion students worldwide. Our mission is to change that.As a dynamic EdTech scale-up with a team of 125, we are transforming learning experiences in over 120 countries. Our innovative platform replaces traditional textbooks by integrating engaging pedagogy with advanced AI and data analytics, empowering both students and teachers in various educational settings, from international institutions to U.S. high schools.Why join Kognity?Make an Impact – Your contributions will significantly affect the educational journeys of teachers and students across the globe, ensuring real-world outcomes.Ownership and Accountability – We value initiative and expect you to take ownership of your projects from inception to delivery, with a focus on results.Collaborate with Top Talent – You will work alongside passionate and intelligent colleagues to tackle complex challenges, in a high-paced environment.Foster Continuous Learning – We encourage personal and professional growth, with a focus on learning and improvement.Your Responsibilities:Develop and deploy full-stack features using Python and TypeScript, enhancing the user experience for teachers and students.Design and refine robust systems with an emphasis on best practices, including APIs, ORMs, caching, and testing, ensuring high performance and reliability.Continuously improve the codebase by simplifying and fortifying it, while elevating engineering standards.Manage problem domains comprehensively, from defining the technical strategy to delivering high-quality software promptly.Qualifications We Seek:Demonstrated experience in building impactful software within a fast-paced product environment.Proficiency in full-stack development with TypeScript and at least one server-side language such as Python, Ruby, or Node.js.Strong history of owning projects from conception to execution, demonstrating technical and strategic prowess.

Location: Stockholm HQ About Legora Legora builds an AI-powered platform designed for legal professionals. By working directly with lawyers, the team creates technology that fits real-world workflows and helps users analyze large volumes of documents quickly. Global firms such as Cleary Gottlieb, Goodwin, Bird & Bird, and Linklaters trust Legora’s solutions in over 40 countries. The company values rapid iteration and scalable products as key parts of its growth. Role Overview The Senior Software Engineer will help develop, review, and launch products used by legal experts worldwide. This role involves working across the full technology stack and offers plenty of ownership and autonomy. Projects range from building new features to optimizing existing systems, always with a focus on quality and impact. Main Responsibilities Design and implement end-to-end features for the web platform. Take responsibility for the codebase, maintaining high standards for code quality, security, and development speed. Work with technologies including React, Node.js, AWS, Azure, and Kubernetes. Review code and mentor junior developers, supporting their growth and team collaboration. Promote continuous improvement and challenge established ways of working both within the team and the wider industry. Who We’re Looking For Genuine interest in software engineering and a drive to innovate within legal technology.

Join Us at LegoraAt Legora, we are on an ambitious journey to transform the legal landscape. Unlike traditional solutions that cater solely to lawyers, we collaborate with them to ensure our innovative tools meet their real-world needs. Our AI-driven workspace not only enhances efficiency but also empowers legal professionals to ask insightful questions and uncover new perspectives.We are pushing the limits of legal technology to make intricate processes more intelligent, quicker, and more user-friendly. Our advancements allow for rapid analysis of extensive documents and the creation of automated workflows, developed in partnership with top-tier legal firms.Trusted by firms like Cleary Gottlieb, Goodwin, Bird & Bird, and Linklaters across 40 countries, we are not resting on our laurels. We prioritize fast shipping, effective iteration, and strategic scaling to ensure we remain at the forefront of the industry.Joining Legora means becoming part of a team that strives for excellence and believes in collective success. If you're passionate about leveraging technology to empower lawyers and eager to create meaningful change in a dynamic environment, we want to hear from you!Be a Part of Shaping the Future of Legal TechnologyThe RoleAre you ready to elevate your AI career? At Legora, we are committed to redefining the legal industry through advanced AI and LLM technologies. We are looking for talented software engineers to join our agile team, where you will tackle complex projects and help transform the way legal professionals operate.Note: This is a full-time, in-office role based in Stockholm, as we believe in the power of collaboration.Your Responsibilities:Design and implement end-to-end AI and LLM functionalities for our web platform.Stay updated with cutting-edge LLM features and agentic tools.Utilize technologies such as React, Node.js, AWS, Azure, and Kubernetes.Take ownership of our codebase, ensuring high-quality code, security, and rapid development.

About SanaSana is an innovative AI laboratory dedicated to developing superintelligent solutions for the workplace. Our philosophy is rooted in the belief that organizations can achieve their goals more efficiently when teams have seamless access to knowledge, automation of repetitive tasks, and the ability to learn continuously, all facilitated by intelligent AI systems. As a subsidiary of Workday, we focus on creating AI technologies that enhance human capabilities rather than replacing them.To realize our mission, we offer two cutting-edge products. Sana Agents streamline the process of accessing all company applications, knowledge, and data, allowing AI agents to perform meaningful work and enabling teams to process and act on information at an unparalleled scale. Sana Learn is a comprehensive AI-driven learning platform that merges the ease of a contemporary learning environment with intelligent functionalities such as an AI tutor, automated content generation, and interactive applications, ensuring that knowledge is not only accessible but also actionable.We are a highly skilled and passionate team of engineers and designers hailing from prestigious companies like Google, Spotify, Apple, and Databricks, all driven by a commitment to technical excellence and rapid development. Our tools are already empowering over a million users to enhance their learning and productivity across numerous leading enterprises, and we are just beginning our journey.About the RoleWe invite you to join our engineering team and play a pivotal role in shaping the future of knowledge sharing and AI-powered learning. We are on the lookout for gifted engineers who can contribute across our technology stack. Whether you are a generalist or possess specialized expertise, we appreciate strong engineering fundamentals and a growth mindset.Our Tech StackOur development is centered around a modern stack optimized for both human and AI interaction.Backend: TypeScript, Kotlin, Node.jsFrontend: TypeScript, React, TailwindDatabases: Postgres, RedisCloud Infrastructure: GCP/Kubernetes/TerraformWhat We OfferBe part of the future of AI alongside brilliant minds from industry-leading companies such as Google, Apple, Spotify, Notion, Slack, Databricks, and BCG.Receive a competitive salary along with a transparent and appealing equity options program.Experience rapid professional growth in a dynamic environment that promotes continuous feedback and mentorship from experienced leaders.Collaborate with talented colleagues across more than five countries while serving global clients, all from our beautiful office in Stockholm.