System Developer .NET at Sopra Steria | Stockholm

Join AFRY as a Fullstack System Developer specializing in Java and .NET technologies. In this role, you will be integral in designing, developing, and maintaining innovative software solutions that meet our clients' diverse needs. You will work within a collaborative team environment, contributing to exciting projects that leverage the latest technologies.

Sopra Steria is looking for a Java System Developer to join the team in Stockholm. This position centers on building and maintaining Java-based applications that support a range of business needs. Role overview As a Java System Developer, the work involves designing, developing, and maintaining applications. Collaboration with colleagues from different disciplines is a key part of the role, ensuring that software solutions meet high standards of quality and reliability. What you will do Design and implement Java applications Maintain and improve existing systems Work closely with cross-functional teams on project delivery Location This position is based in Stockholm.

Sopra Steria is looking for a Senior .NET System Developer to join the team in Stockholm. This position focuses on leading projects that use .NET technologies to build scalable software applications. Role overview As a senior developer, you will design and develop solutions that support both internal teams and client needs. Collaboration with colleagues from different disciplines is central to the role. Your technical decisions will help shape project outcomes and improve the quality of our software. What you will do Lead the development of applications using .NET technologies Work closely with cross-functional teams to deliver software solutions Contribute to the design and architecture of scalable systems Requirements Extensive experience with .NET development Strong background in designing and building scalable applications Comfort working in a collaborative, team-oriented setting

Translate requirements into technical designs that guide development.Build robust C# client applications, including WPF and Windows services.Create C# web solutions leveraging Cloud technologies, ASP.NET, and MVC frameworks.Collaborate effectively as an integral member of an agile team.Develop unit tests and assist in the T&V process to define test cases within an agile environment.

Join atlavik as a Senior Fullstack Developer, where your expertise in our technology stack will help shape the future of healthcare solutions. You will work with technologies such as JavaScript, React/Redux, Node.js, SQL/Postgres, and Java to build innovative applications that address community health needs. Key ResponsibilitiesDesign, develop, and enhance complex software solutions for various platforms including cloud and on-premise applications.Utilize advanced professional concepts and company goals to creatively address technical challenges.Collaborate within a Scrum team to develop robust software solutions based on prioritization from the product backlog.Engage in effective teamwork to achieve collective objectives.Establish and uphold coding standards, including writing maintainable code, developing automated tests, and creating comprehensive documentation.Work closely with fellow developers to ensure best practices are employed throughout the development process.Oversee the review and approval of merge/pull requests within your codebase.Act as a technical expert for your contributions, ensuring adherence to development standards.Research and analyze technological advancements, proposing improvements as necessary.Act as an ambassador for the software development team, sharing knowledge with IT and business stakeholders.Stay current with emerging development tools and techniques through continuous education and professional networking.

Key ResponsibilitiesConduct analysis, design, programming, debugging, and modification of intricate software enhancements and features for local, networked, cloud-based, or web-related applications.Utilize advanced professional concepts and organizational goals to creatively and effectively resolve challenges.Actively engage as a developer within a Scrum team, delivering software solutions based on the team backlog.Collaborate effectively with team members to achieve common objectives.Implement and advocate for development standards, focusing on writing maintainable code, automated testing, and comprehensive documentation.Work with fellow developers to apply best practices and techniques in software development.Ensure thorough review and approval of merge/pull requests.Act as the technical owner for the code developed, ensuring adherence to development standards.Analyze emerging technological trends and make formal recommendations for enhancements when necessary.Stay current with job knowledge by exploring new development tools, programming methodologies, and technology; participating in educational opportunities, engaging with professional literature, and maintaining personal and professional networks.

TL;DR - We are in search of talented Fullstack Product Engineers to join us in shaping the future of AI. You will play a crucial role in developing features across our entire technology stack, empowering the next generation of creators and innovators.Why Join Lovable?At Lovable, we empower anyone to build software using plain English. From individual entrepreneurs to Fortune 100 companies, millions harness Lovable to convert raw ideas into tangible products swiftly. We are pioneering a transformative shift in software development, offering you a unique chance to revolutionize the digital landscape. Over 2 million users across 200+ countries are already leveraging Lovable to launch businesses, tackle complex challenges, and fulfill their aspirations. And this is just the beginning.Our small, exceptionally skilled team in Stockholm is dedicated to building a company that will define a generation. We prioritize ownership, speed, and collaborative teamwork. We seek individuals who are passionate, willing to challenge the status quo, and eager to contribute to something impactful.Your RoleYou will spearhead the development of a generational product, enhancing the core functionalities of Lovable’s offerings.Implement and oversee features across the full stack: frontend, backend, and infrastructure.Take ownership of systems from architecture to deployment and continuous improvement.Work collaboratively with machine learning, design, and product teams to create intuitive and groundbreaking user experiences.Lead the entire development lifecycle, from technical planning to production launch and iterative enhancements.Play a key role in influencing our technical direction, engineering culture, and product strategy.Our Technology StackWe utilize tools that are favored by both humans and AI:Frontend: React, TypeScript

Soprasteria is looking for a Lösningsarkitekt .NET to join the team in Stockholm. This position focuses on designing and building software solutions using the .NET framework. Role overview The Lösningsarkitekt .NET works closely with cross-functional teams to understand client needs and translate them into effective technical solutions. The role involves architecting software that supports business goals and ensures high quality standards. What you will do Collaborate with colleagues from different disciplines to gather and clarify client requirements Design and develop software solutions using .NET technologies Contribute to delivering projects that support business outcomes Location This role is based in Stockholm.

About SanaSana is a pioneering AI lab dedicated to creating superintelligence for work. We believe that organizations can accelerate their missions when teams can seamlessly access knowledge, automate repetitive tasks, and engage in learning with the assistance of agentic AI. As a subsidiary of Workday, our commitment lies in developing AI that enhances human capabilities rather than replacing them.Our mission is actualized through two innovative products: Sana Agents, which provide an effortless way to access a company’s applications, knowledge, and data, empowering AI agents to perform real work at an unprecedented scale; and Sana Learn, an AI-driven learning hub that marries the simplicity of a modern learning platform with intelligent features such as an AI tutor, automated content generation, and interactive apps, making knowledge not just accessible but actionable.We are a team of exceptionally talented engineers and designers, hailing from industry giants like Google, Spotify, Apple, and Databricks, driven by a shared passion for technical excellence and rapid iteration. Our tools are already enhancing the productivity of over a million users across hundreds of leading enterprises - and we are just getting started.About the RoleIn this role, you will be responsible for delivering customer-facing value swiftly by collaborating in small teams - taking ownership from problem identification through to UX design, API development, and performance instrumentation. You will work end-to-end to launch features that not only delight users but also create significant impacts for Sana and our clientele.Key ResponsibilitiesTake ownership of features from design to deployment, including frontend (React/TypeScript), backend (Node/TypeScript), and database (Postgres).Integrate with agent and retrieval APIs to ensure seamless product experiences.Instrument products, conduct A/B testing, and iterate quickly in collaboration with design and product management teams.Make pragmatic trade-offs and thrive in the ambiguity of 0→1 product spaces.Work closely with stakeholders, users, and teammates to identify and solve the right challenges.Success CriteriaRapid feature deployment that delights users and drives measurable outcomes.End-to-end ownership is standard - problems are resolved rather than passed along.Product instrumentation and A/B testing guide every iteration.You will act as a force multiplier for your team, enhancing the capabilities of those around you.Embrace ambiguity as an opportunity for innovation.

Join our dynamic team at Spotify as a Fullstack Engineer focusing on our innovative Generative UI Platform. In this role, you will leverage your full-stack development skills to create user-centric applications that push the boundaries of digital experience. We are looking for a passionate engineer who thrives in a collaborative environment and is eager to tackle complex challenges while enhancing our platform's capabilities.

Join Us as a Fullstack Engineer in AI Code Security! At Lovable, we are on the lookout for a passionate Fullstack Engineer who is dedicated to advancing AI code security. In this role, you will be at the forefront of designing and implementing robust static code analysis and security scanning capabilities, ensuring that Lovable remains the premier AI-powered software creation platform globally.Why Choose Lovable?Lovable empowers individuals and teams to develop software using plain English. Our platform is utilized by a diverse range of users, from solo entrepreneurs to Fortune 100 companies, allowing millions to turn their ideas into tangible products swiftly. We are spearheading a transformative shift in software development, providing you with a unique opportunity to make a significant impact in the digital landscape. With a user base exceeding 2 million across over 200 countries, our influence is vast—and we are just getting started.Based in Stockholm, we are a small yet highly skilled team committed to building a company that will define a generation. We prioritize ownership, rapid iteration, and collaborative efforts with minimal ego. We are looking for individuals who are deeply passionate about their craft, who will challenge us, and who are motivated to create lasting change.Key Qualifications3+ years of experience in code security, static analysis, or code scanning, preferably with a focus on security-centric products (SAST, linters, vulnerability scanners, or similar utilizing AI or sophisticated machine learning techniques).5+ years of full-stack engineering experience delivering high-quality software products.Expertise in modern frontend technologies (React/TypeScript) and backend programming (Golang, Rust).Comprehensive understanding of system design, performance trade-offs, and scalable architectures.Strong product insight with the ability to convert security insights into user-friendly and actionable experiences.Bonus: A Master’s or PhD in code analysis, static analysis, or a related discipline. Experience in integrating AI/LLMs into security tools. Knowledge of mobile application security scanning.Your ResponsibilitiesDevelop our code scanning engine: Architect and execute static analysis and security scans that identify issues within user-generated application code for both web and mobile platforms.Deliver features end-to-end, spanning frontend, backend, and infrastructure alongside a compact, autonomous team (≤3 engineers).Incorporate AI/LLM functionalities into security workflows to detect, elucidate, and resolve vulnerabilities.Promote secure coding practices, perform security-focused code reviews, and elevate standards across the engineering organization.Shape our technical trajectory and product roadmaps.

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.

Role Overview Keyfactor Inc. is hiring a Senior Software Engineer with a focus on Java. This position is based in either Stockholm, Sweden or Toronto, Canada. The role centers on building software that helps clients manage digital identities securely. What You Will Do Design and develop Java applications with security and reliability in mind Work closely with cross-functional teams to deliver high-quality software Contribute ideas and improvements to drive product innovation Who We’re Looking For Experienced in Java application development Detail-oriented and proactive in approach Comfortable working in a fast-moving setting Collaborative mindset for working with different teams This is a chance to take on meaningful technical challenges and make a direct impact on secure identity management solutions at Keyfactor Inc.

Join Us as a Senior Financial Systems Engineer!At Lovable, we’re on the lookout for a skilled engineer to lead the development and management of our financial systems infrastructure. This infrastructure is vital as it supports our payment flows, usage metering, monetization, and billing processes.Why Choose Lovable?Lovable empowers individuals and teams of all sizes to create software using any programming language. From aspiring entrepreneurs to major corporations, millions leverage Lovable to turn innovative ideas into successful products swiftly. We’re pioneering a transformative era in software development, providing you with an extraordinary chance to influence the digital landscape. With over 2 million users across more than 200 countries, Lovable is making waves in business automation and idea realization, and this is just the beginning.Our compact, highly talented team is dedicated to forging a company that defines a generation from our base in Stockholm. We emphasize extreme ownership, rapid execution, and collaborative humility, seeking individuals who are passionate, fast-paced, and eager to make a significant impact.Why This Role is Crucial?As we expand our global reach, it’s essential that our financial systems evolve in tandem. We are establishing a dedicated Financial Systems Engineering team to manage everything that links product usage to revenue, including subscription billing, credit-based usage models, service billing, and new monetization infrastructures as we grow.This senior position offers substantial influence. You won’t just maintain existing systems; you’ll be re-engineering and re-architecting while we still have the agility to do it right, shaping the architecture that will support our journey through scaling for years ahead.

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 Our Mission at LegoraAt Legora, we're on a transformative journey to revolutionize the legal industry. Our commitment is clear: we're not just creating solutions for lawyers; we're collaborating with them to ensure effectiveness and relevance at every stage of the process.Our innovative AI-driven workspace empowers legal professionals to enhance their efficiency, ask insightful questions, and extract valuable insights. We continuously strive to innovate within legal technology, making intricate processes smarter, swifter, and more user-centric. By analyzing vast documents in moments and designing intelligent workflows in conjunction with top-tier firms, we are turning ambitions into achievements.Trusted by global leaders such as Cleary Gottlieb, Goodwin, Bird & Bird, and Linklaters across 40 countries, our trajectory is anything but static. We prioritize rapid deployment, effective iteration, and scalable growth—not by chance, but by strategy.When you become part of Legora, you step into a culture that believes in excellence beyond mediocrity. We believe that collective success is achievable through empowering lawyers with technology that genuinely comprehends their needs. If you're eager to build from the ground up, collaborate with remarkable talent, and drive change in a dynamic and impactful domain, this is your opportunity.Are you ready to help us shape the future of legal technology?Our Cutting-Edge Technology StackYou will engage with an advanced and integrated tech ecosystem that prioritizes security, productivity, and collaboration. Our identity management framework is built on Okta for access control and Entra ID for hybrid directory services. Daily operations are streamlined through Google Workspace for collaboration and Slack for communication, while Zoom fulfills our video conferencing requirements.IT operations are optimized using Workwize for asset management, and we incorporate AI tools like ChatGPT and Claude to enhance our workflows. This technology stack is designed to support our fast-paced environment while ensuring enterprise-level security and scalability as we evolve.Your ResponsibilitiesManage Identity & Access: Oversee and advance our Okta environment, including SSO integrations (SAML 2.0 & OIDC), lifecycle management, MFA policies, and Okta Workflows. Administer Entra ID for hybrid identity scenarios and conditional access policies.User Provisioning: Ensure efficient user provisioning and deprovisioning processes within our systems.

About Modal:At Modal, we empower AI teams with cutting-edge infrastructure. Our platform offers seamless GPU access, rapid container startups, and integrated storage solutions, simplifying the process of model training, batch job execution, and low-latency inference. Trusted by innovators like Suno, Lovable, and Substack, Modal enables seamless transitions from prototype to production without the complexities of infrastructure management.As a fast-expanding team with a presence in NYC, SF, and Stockholm, we have achieved remarkable milestones, including a $1.1B valuation following our recent Series B funding. Thousands of clients depend on us for their production AI workloads, including industry leaders like Lovable, Scale AI, Substack, and Suno.Joining Modal means becoming part of a rapidly growing AI infrastructure company at a pivotal stage, with ample opportunities for personal and professional advancement. Our diverse team comprises creators of renowned open-source projects (like Seaborn and Luigi), academic scholars, international competition medalists, and seasoned engineering and product leaders with vast experience.Your Role:We are on the lookout for talented engineers who are passionate about designing, building, and maintaining high-performance systems that form the backbone of our serverless platform.Key Qualifications:A minimum of 5 years of experience in developing robust production-grade codeProven track record in building large-scale, high-performance distributed systems (battle scars are a plus)Strong expertise in cloud technologiesIn-depth understanding of low-level operating systems (Linux kernel, file systems, containers, etc.)Experience in performance engineering, including examples of optimizations you've achievedWillingness to work onsite at our Stockholm officeFamiliarity with Rust is a bonus, though not mandatory

Are you a seasoned expert in cooling and heat pump technology looking to engage in advanced energy systems across complex projects? We are currently seeking a refrigeration specialist to join our HVAC division in Stockholm, where you can leverage your expertise to develop cutting-edge energy-efficient cooling and heating solutions for the future.In this role, you will collaborate on technically challenging projects alongside specialists in energy, installation, and sustainability. The projects will span various sectors, including commercial properties, industry, hospitals, laboratories, and data centers, all of which demand high standards of energy efficiency and system integration.As a refrigeration specialist, you will serve as a technical expert and advisor, participating in projects that focus on advanced cooling and energy systems. Your responsibilities will include working in the early stages with system selection and analysis, as well as supporting project teams during the design phases with your specialist knowledge.Key Responsibilities:System design and technical advice on cooling systems and heat pump solutions.Analysis and sizing of chillers, heat pumps, free cooling, and hybrid solutions.Evaluation and design of thermal energy storage, such as borehole thermal energy storage (BTES/ATES).Consultation on refrigerant selection and future technical solutions.Interpretation and application of EU regulations including the F-gas regulation and other relevant legislation.Technical advisory in complex projects, including data centers, industrial processes, and large property developments.Collaboration with energy engineers, HVAC designers, and other technical specialists in multidisciplinary projects.

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.