senior react developer

Siemens Healthineers AG is seeking a Senior Software Engineer to join our international development team. You will participate in the full software lifecycle, from design to production deployment, focusing on adaptive radiotherapy software and state-of-the-art architectures.The role emphasizes distributed systems, cloud-native development, and collaboration...

As of 2 September 2025, Vivicta, former Tietoevry Tech Services, now operates as a standalone company under our new brand. We’ve officially launched Vivicta, your trusted Nordic transformation partner, making everyday easier through technology. You can explore more about our brand and what we stand for at https://www.vivicta.comReady to join us? Click...

We are looking for a passionate and experienced UI Designer to join the Community Team at Supercell. You will help define how players experience Supercell beyond gameplay itself by designing intuitive, polished, and delightful services that reward, inform, and inspire our players. You’ll work across a variety of touchpoints, from in-game news and deep link...

Build something monumental for Healthcare! At Tandem Health we’re reimagining healthcare by putting clinicians first. Our platform - designed by clinicians, for clinicians - is built on deep insight into real-world pain points, with intuitive medical notes and workflows that truly support patient care. We’re a fast-scaling health-tech company backed by...

Head of Energy & Infrastructure Business – ALTEN Finland Lead the Growth of ALTEN’s Energy & Infrastructure Business ALTEN Finland, part of the ALTEN Group (60,000+ experts worldwide), is looking for a commercially driven and visionary Head of Energy & Infrastructure Business to lead and accelerate our growth within the energy, infrastructure, process,...

Reaktor’s Retail Business Unit in Europe (Helsinki, Amsterdam, Lisbon) is seeking an experienced Senior Native Mobile Developer to join the team. You will work on iOS and Android native development, delivering polished mobile experiences and collaborating with multidisciplinary teams.You will own testing, monitoring, and quality, contribute to...

Mercury is an equal opportunities employer. Senior Electrical Engineer – Helsinki, Finland Mercury is the European leader in construction solutions. We build and manage complex engineering & construction projects for the world’s leading corporations. Our solutions help deliver technologies and life changing advancements that connect people, communities,...

Senior Engineering Manager, Ad Performance Recommendation We are seeking a Senior Engineering Manager to join our 200+ product development organization and lead our Ad Performance Recommendation team. The team is responsible for developing an innovative AI-powered system that leverages marketing ad tech data and various data sources to identify performance...

We are looking for a passionate Lead Developer for a cross-functional tech team If's Digital Services unit is responsible for delivering world-class digital experiences for our customers across the Nordic region. We are a development hub within our Customer and Partner Solutions organisation, where modern technologies, smart design and user experience are...

Staff Software Engineer, Cloud Developer Experience 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...

About the roleJoin our Next Gen Value Streams services team, a specialized pool of around 50 team members dedicated to reimagining how organizations function. We don't just automate tasks; we architect intelligent, adaptive workflows that connect disconnected data and turn manual work into a source of competitive advantage. In this role, you will work on...

Join Qutwo - Europe's private Quantum AI Lab, on our quest to bridge the gap between the classical and the quantum world. We partner with the most advanced and forward-thinking customers, solving fundamental real-world problems, side by side. The best scientists and engineers in the world are drawn to one thing: a problem worthy of their ability. At Qutwo,...

Would you like to join a global, growing company that innovates for a more sustainable tomorrow? UPM could be the team for you. We are frontrunners in developing renewable alternatives to fossil-based materials. Besides enabling both businesses and consumers make more sustainable choices, we strive to create a positive UPM experience for all our employees...

About Voodoo Founded in 2013, Voodoo is a tech company that creates mobile games and apps with a mission to entertain the world. Gathering 800 employees, 7 billion downloads, and over 200 million active users, Voodoo is the #3 mobile publisher worldwide in terms of downloads after Google and Meta. Our portfolio includes chart-topping games like Hole.io and...

United Nations University World Institute for Development Economics Research (UNU‑WIDER) in Helsinki seeks a distinguished Senior Research Fellow to support its research and training programme. You will contribute to the programme, guide publications, and engage with international partners to advance development economics.You will teach, supervise PhD...

Our world depends on rocks, minerals, metals and other raw materials – the building blocks of modern society. As an industry leader, Metso helps transform these essential materials to enable sustainable modern life. Our solutions and services support everything from renewable energy and electrification to the infrastructure and digital economy shaping our...

Senior Software Engineer - Reporting Platform This role sits at the core of Smartly's data platform, where we build the systems that power performance reporting for some of the world's largest and most influential brands. You will join the Bobby Tables team, building the software behind Smartly's performance analytics. Our systems ingest, process, and serve...

The Faculty of social sciences, INVEST Flagship and research centre at the University of Turku invites applications for contract-based, fixed termposition of senior researcher from 1.10.2026 to 31.8.2027 Employment starts on 1.10.2026 or as agreed. The CAUSALTIME project develops new methods for causal inference based on panel and register data, with a...

Job Description We are looking for a Senior (Lead) Platform Data Engineer to join our Helsinki team. Depending on experience, this role may be filled at a Senior or a Lead Platform Data Engineer level. About the role At Sievo, data is everything — we have visibility into more than 2% of global GDP in spend, and turning data at that scale into...

Sievo is seeking an AI-native software engineer focused on backend development to join the Suppliers team in Helsinki. Senior or Lead level will be offered based on experience.The role blends cloud-native software delivery with agentic AI systems and modern tooling to shape the platform's defaults. You will drive technical architecture, collaborate with...