fullstack engineer

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...

Wolt Oy in Helsinki (Hybrid) is seeking an experienced software engineer to join our Merchant EMEA Engineering team. You will build and maintain production software across backend services and user-facing applications, focusing on onboarding, analytics, recommendations, and integrations.You should have proven experience in backend, frontend, or fullstack...

Aiven is seeking a Fullstack Software Engineer to join the Kafka Ecosystem team in Helsinki. You will build end-to-end features with Python in the platform, contribute to Karapace, and build React/TypeScript UIs that expose capabilities to users.You will own features end-to-end, design the API, build the async Python backend, and wire up the React/TypeScript...

A forward-thinking tech company in Helsinki is seeking a Senior Fullstack Engineer to join their Tooling and Releases squads. The ideal candidate will have over 5 years of experience in software development, demonstrating frontend expertise, experience with AI technologies, and robust backend skills. Responsibilities include building secure internal...

Smartly is seeking a Senior Fullstack Engineer to help build and evolve its TikTok offering. You’ll own end‑to‑end capabilities from UX to services, collaborating with product managers and designers to deliver scalable, reliable solutions.You’ll work across the stack with Node.js, TypeScript, and React, shaping architectural decisions and mentoring...

Smartly seeks a Senior Fullstack Engineer to shape the TikTok offering for large advertisers, enabling creation, management, automation, and optimization at scale. You’ll own development end-to-end across the stack, from UX to services and integrations, with opportunities to explore AI and automation.You’ll influence architectural decisions, collaborate...

Smartly is seeking a senior engineer to own vertical slices of the platform, from design to API contracts, working across UX, product, and infrastructure teams. You will contribute to creative engineering initiatives and ensure high quality software that meets customer needs.The role requires 7+ years of experience in web applications, strong React frontend...

Our mission at Oura is to empower every person to own their inner potential. Our award-winning products help our global community gain a deeper knowledge of their readiness, activity, and sleep quality by using their Oura Ring and its connected app. We've helped millions of people understand and improve their health by providing daily insights and practical...

We’re looking for a Senior Fullstack Engineer to join Smartly and help shape the future of our multi-channel advertising platform. You’ll be working on expanding Smartly into both new and existing advertising channels. Depending on the team, this can mean greenfield development of new integrations or evolving and scaling established ones like...

We’re looking for a Senior Fullstack Engineer to help build and evolve Smartly’s TikTok offering, enabling some of the world’s largest advertisers to create, manage, automate, and optimize their TikTok campaigns at scale.TikTok is an important part of Smartly’s multi-channel advertising offering. The capabilities you build will directly shape how our...

Smartly in Helsinki is seeking an experienced engineer to own vertical slices of our platform, collaborating with UX, product, and infrastructure teams to deliver robust web and backend solutions.You will work with React on the frontend and Node.js/TypeScript on the backend, communicating clearly with stakeholders and driving high-quality software delivery...

Wolt is seeking a Fullstack Engineer to help build merchant-focused products across the stack. You’ll own features end-to-end, collaborating with product, design and data teams to deliver reliable APIs, services, and user-facing features. Strong AI-first mindset and experience in Go, Kotlin, TypeScript/React is ideal.Based in Helsinki or Berlin on a hybrid...

Smartlyio in Helsinki is looking for a Senior Fullstack Engineer to enhance their multi-channel advertising platform. You will be responsible for designing systems, building integrations, and collaborating with major partners like Google and Spotify.The role emphasizes ownership of complex challenges and encourages mentorship within the team. You will work...

Blueprint Genetics Oy in Espoo, Finland seeks a Senior Fullstack Developer to design, build and modernize clinical genetic laboratory software platforms. You will work across web platforms spanning ordering, case-management, lab operations and interpretation in a cloud-native stack.You will apply AI-assisted development and agentic workflows, collaborate...

Reaktor is seeking a Senior Fullstack Developer to join one of our Business Units in Helsinki, Finland. You’ll work across modern web applications, backend services and production systems, solving ambiguous problems with clients and thriving in a low‑hierarchy environment.You will collaborate with clients across digital product, platform and service...

ICEYE in Espoo is seeking a Senior Fullstack Engineer in Product Engineering to own end-to-end product slices, spanning backend APIs and frontend UIs. You will contribute to resilient, production-ready software and collaborate with cross-functional teams.The role emphasizes on-call reliability, observability, and reducing toil, with 3 days/week office...

Our mission at the company is to empower every person to own their inner potential. Our award-winning products help our global community gain a deeper knowledge of their readiness, activity, and sleep quality by using their company Ring and its connected app. We've helped millions of people understand and improve their health by providing daily insights and...

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...

Aiven is seeking a Fullstack Software Engineer to join the Kafka Ecosystem team in Helsinki. You will build end-to-end features with Python in orchestration of managed Apache Kafka services across clouds, contribute to Karapace, and develop React interfaces that users interact with.Your focus will be Python, spanning API design to the UI. You will extend...

Cześć! Poznaj możliwości współpracy ze Scalo!Zakres współpracy obejmuje:rozwój i utrzymanie nowoczesnych aplikacji webowych z wykorzystaniem Angular, TypeScript, HTML oraz Node.js,projektowanie i implementację rozwiązań opartych o architekturę serverless z wykorzystaniem AWS (m.in. Lambda, S3, ECS, CDK, Serverless Framework),projektowanie oraz...