senior java backend developer

Your code will protect millions of devices. At CUJO AI, our OTM (OnTheMove) team builds Android and iOS apps backed by acloudplatform deployed on AWS — delivering cybersecurity and parental control features to users on the go. We’relooking for aSenior Software Engineerwithproven experiencein programming usingTypeScript/Node.jsonAWS serverlessservices,to...

Job ID: 1040 Location: Helsinki, Finland We are looking for a Senior Calypso Developer to join our team developing components powering one of core processes in the trading business - Settlement. This is a permanent and full-time position, based in our office in Helsinki (Finland). About our team Meet the Settlement Development team. Our role is to develop...

Reaktor's tech community is looking for an experienced Senior Native Mobile Developer to join our Gaming & Entertainment Business Unit in Helsinki. If you thrive in native mobile development, enjoy solving complex challenges in multidisciplinary teams, and are curious to work in a low-hierarchy environment, you might just be what we’re looking for.You will...

Supercell in Helsinki is seeking an experienced Server Engineer for the Brawl Stars team. In this role, you'll design and maintain highly scalable backends for live games and collaborate closely with client programmers to develop new features.The ideal candidate will have strong server-side Java experience and a passion for game feature development. You will...

Tenth Revolution Group in Finland is seeking a Senior Backend Developer to join our Tech Lead pathway. You will stay hands-on while gradually taking ownership of architectural decisions and mentoring junior developers.Design scalable backend systems, contribute to architecture discussions, build APIs, and work with product teams to translate requirements...

We are looking for a Senior Software Engineer to join the Supercell ID team within our Player Platform organization. In this role, you will own and drive significant evolutions of Supercell ID: setting technical direction, leading high-impact initiatives end-to-end, and raising the bar for player safety, reliability, and trust across our ecosystem. As a...

Overview We are seeking an experienced and highly skilled Senior LLVM Compiler Backend Engineer to join our team. In this role, you will be responsible for developing and optimizing the compiler backend for our Parallel Processing Unit. You will work on a variety of tasks that require a deep understanding of computer and CPU architectures, LLVM IR, and the...

Helsinki Hybrid Monthly salary: €5,500 - €6,500 Job Description For over 35 years, F-Secure has led the cybersecurity industry with our 200+ service provider partners. As the home of scam protection, we're reimagining how we protect people from modern threats through cutting-edge scam detection and solutions that are setting...

About Wunderdog We're a 70-person consultancy helping development teams get better at using AI tools to build things the right way and faster. Not through Powerpoint slides, but through handson training workshops and actual work in teams at companies like Finnair, Elisa, SOK, Alma Media, Sanoma, Blueprint Genetics, RELEX, Smartly and Babbel. Our focus is the...

Unikie in Finland seeks an experienced Kotlin/Java Full Stack Developer to join a long-term customer project. You will build Kotlin/Java backend services, React frontends, and contribute to cloud infrastructure, CI/CD, and software architecture in a cloud-native environment.You will work across the full stack, collaborate with multi‑vendor teams, apply...

HiQ Oy is seeking experienced senior full stack developers to join long-term finance sector projects. You will build customer-facing banking, insurance, and finance services using cloud technologies, Java, Spring Boot, TypeScript, React, Kubernetes, and REST APIs.The role offers mostly remote work with some on-site days in Helsinki. We value self-guided...

Job ID: 5606   Welcome to Group Technology, where we pride ourselves on engineering solutions and direct Nordea’s transformation by providing a holistic technological view and structured understanding of the bank, and its surrounding environment to enable the Customer Vision and the Business Strategy.   Would you like to contribute to Nordea’s digital...

Unikie in Tampere, Finland seeks an experienced Kotlin/Java full stack developer to join a long-term customer project. You will build Kotlin/Java backend services, develop React frontends, and contribute to cloud infrastructure, CI/CD and software architecture.The role requires 5+ years in full stack or backend, hands-on Kotlin/Java with Spring Boot,...

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 2022 we joined forces with DoorDash and together we keep on...

We are the independent expert in assurance and risk management. Driven by our purpose—to safeguard life, property, and the environment—we empower our customers and stakeholders with facts and reliable insights so that critical decisions can be made with confidence. As a trusted voice for many of the world’s most successful organizations, we use our...

ICEYE is looking for a Senior Backend Software Engineer in Espoo, Finland. This role offers the chance to impact global intelligence through the engineering of production-grade systems that control satellites. You will design, develop, and optimize backend services for satellite fleet operations. The ideal candidate has over 5 years of experience in backend...

Smartly in Helsinki is seeking a Senior Software Engineer specialized in backend and full-stack development to drive a flagship rendering engine. You will own backend projects, design APIs, and push scalable solutions across distributed systems.The role emphasizes high availability, performance, and collaboration with Product and Infra, with hybrid work3...

Are you a Senior Fullstack Developer who thrives on AI-assisted and agentic engineering practices, and wants to use them to build technology that truly makes a difference? Do you want to help design, build and modernize the software platforms that power a clinical genetic testing laboratory, in a global organization at the forefront of life sciences and...

On a mission to make musicality as common as literacy At Yousician, you’ll help shape the future of music education and profoundly impact the lives of millions of people. Yousician impacts and enriches the lives of millions of people by empowering them to play music they love, learn something new, and nourish their well-being. We merge music and technology...

Nordea Bank Norge ASA in Helsinki is seeking a Senior Software Engineer to join the High Risk Change and Development team, owning end-to-end integrations from requirement to deployment. You will leverage Java 21+ and/or Python, with SQL, API services, and containerized deployments (Docker, Kubernetes).You’ll design scalable integration patterns,...