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Smartly is seeking a Senior Software Engineer to join our AI Platform Team. You will design, build and maintain backend services powering Smartly’s campaign optimization products, collaborating with data scientists and frontend teams.You’ll work with Python, TypeScript, PostgreSQL, Node.js, Docker and Kubernetes, and contribute to ML-driven solutions...

Holvi is seeking a Senior Backend Engineer to join the ARAP product team in a hybrid setup across Helsinki and Berlin, with remote options. The role emphasizes backend work in Python/Django, collaboration with cross-functional teams, and responsible ownership to deliver scalable financial software for small businesses.You'll work with AI-assisted tools,...

AlphaSense is seeking a Principal Engineer for Mobile Platform & Backend Systems to drive architectural direction across client-facing APIs and backend services. Based in Helsinki, you will influence multiple engineering teams, deliver scalable, production-ready systems, and supervise identity, auth, and security concerns for web and mobile platforms.You...

HiQ Oy etsii kokenutta Lead Developeria pitkäaikaiseen finanssialan asiakkuuteen. Roolissa vastaat teknisen suunnannäytön tiimitasolla, yhdistät arkkitehtuurin, hands-on kehityksen sekä tiimikavereiden sparraamisen. Pääset rakentamaan pankki- ja rahoituspalveluita sekä digitaalisten asiakkuuskanavien ratkaisuja.Työ on pitkälti etätyötä, mutta...

Hostaway is seeking a Senior Backend Engineer to join the Core team. This fully remote role is open to candidates based anywhere in the EMEA region, enabling collaboration with global peers and customers.You will design, build, and operate backend services in PHP and Go, drive monolith extraction, and shape API strategy for AI-driven workflows while...

Netigate AB in Helsinki is seeking an experienced AI-focused backend engineer to join our product-driven team. You will build AI-driven services in Python, leverage GenAI tools, and design scalable retrieval systems powering LLM-based features.Collaborate with a React/Node.js team to integrate AI capabilities into our product, lead new AI initiatives from...

Smartly is seeking a Senior Software Engineer to join the Reporting Platform team. You will design and implement the core insights engine, ingesting vast data and delivering reliable, real-time reporting for global brands.You will own backend design and optimizations, work across Ruby, TypeScript, Kafka, ClickHouse and PostgreSQL/Citus, and mentor teammates...

Wolt is seeking a senior backend engineer to build and maintain high-throughput services in Go. You’ll collaborate with product, design, and frontend teams to ship features used by internal support agents worldwide.You will design scalable, resilient systems, lead architectural discussions, and ensure well-tested code and high standards. 7+ years of...

We’re a global team of over 400 people, working together to push the boundaries of open‑source technology and multi‑cloud solutions. Our vision is to help developers, builders, and creators bring their ideas to life with speed and simplicity, by providing a cloud data platform that makes open‑source databases, search, streaming, and application...

MORS Software Oy, a Helsinki-based banking tech company, seeks a Senior Software Engineer to own substantial areas of treasury and ALM software. The role centers on backend development with C#/.NET, balancing legacy maintenance and new solutions, within a split of about 60/40 between existing product work and new development.You will partner with Product and...

CUJO AI is seeking a Senior Software Engineer to design and build secure, scalable cloud services for its OnTheMove product. You will work with TypeScript/Node.js on AWS serverless stacks, delivering backend capabilities used by mobile apps and network providers worldwide.You will own IaC and CI/CD pipelines, mentor peers, and collaborate with multinational...

Posti Group is seeking a Lead Software Developer to strengthen our AI competence and build high-quality backend services in Python on AWS. You will collaborate with product owners and domain experts to influence architectural choices and deliver value beyond a single team.You will drive AI-enabled improvements across Posti's operations and software...

Aiven is seeking a Senior Software Engineer to join our platform team in Helsinki. You will design and refactor APIs, write robust Python code, and push features to production on our cloud data platform.You’ll work across backend systems, distributed infrastructure, and platform security to improve scalability and reliability. As a senior contributor, you...

Are you an ambitious backend-oriented Fullstack Engineer ready to take on new challenges and grow exceptionally in your career? Join our team Render as a Senior Software Engineer and be at the forefront of transforming our Creative production tooling!About the Team:Smartly proudly houses Render, responsible for a flagship part of Smartly's product offering,...

Lokki Henkilöstöpalvelut Oy is looking for an Application Developer to join a dynamic team. You will develop and maintain backend services in production, design cloud-based solutions, and work with PostgreSQL databases.The role includes browser-based UI work, integrations, and data transfer as part of information system development. Start date is 1.11.2026...

Berlin, Germany; Helsinki, Finland; Stockholm, Sweden About Wolt At Wolt, we create technology that brings joy, simplicity and earnings to the neighborhoods of the world. In 2014 we started with delivery of restaurant food. Now we’re building the delivery of (almost) everything and you’ll find us in over 500 cities in 30 countries around the world. In...

Wolt in Helsinki seeks a Senior Backend Engineer to own production systems, mainly using Go or Kotlin, and drive end-to-end technical initiatives.You will design, build, and operate backend systems that support inventory, purchasing, and fulfillment, collaborating with product, data science, and operations teams to deliver scalable solutions.Strong...

Principal Engineer, Mobile Platform & Backend Systems About AlphaSense: The world’s most sophisticated companies rely on AlphaSense to remove uncertainty from decision-making. With market intelligence and search built on proven AI, AlphaSense delivers insights that matter from content you can trust. Our universe of public and private content includes...

Senior Software ConsultantJoin Columbia Road as a Senior Software Consultant! Make an impact crafting seamless customer journeys and solving complex challenges directly with clients. Enjoy autonomy, growth opportunities, and variety in technology whilst being supported by a great community. We look forward to hearing from you, future...

We are looking for an (Senior) AI Engineer to strengthen our Data & Analytics crew. If you enjoy building AI applications that solve real problems and work reliably in production, we would like to hear from you. What is the role about? As an (Senior) AI Engineer at Knowit, you will design and build AI applications for our clients, taking solutions from an...