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Jobs in Helsinki, Finland
10 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
1–10 of 10 jobs
Counts are paused for a minute after many searches; results are still current.
Reaktor · Helsinki, Finland
On-siteFull-timeSeniorEngineeringYou will design, build and operate on-premise infrastructure and private cloud platforms that support critical products and our clients’ business needs.
Lead Developer
8 days agoReaktor · Helsinki, Finland
Full-timeLead / staffEngineeringBeing the first point of contact for the client when it comes to technical questions or the quality of the delivery; Working together with the client’s tech and business teams: facilitating collaboration between different stakeholders to ensure quality delivery; Implementing…
Reaktor · Helsinki, Finland +2
HybridFull-timeSeniorEngineeringReaktor's tech community is looking for an experienced Senior Native Mobile Developer to join our Retail Business Unit in our European locations (Helsinki, Amsterdam, Lisbon).
Reaktor · Helsinki, Finland
On-siteFull-timeLead / staffITYou will keep the backlog clear, bring together technical and business needs, and facilitate prioritisation together with the team and business stakeholders. In our low-hierarchy environment, your role is to help the team maintain a shared understanding of what matters most,…
System Administrator (Defence & Security)
5 weeks agoReaktor · Helsinki, Finland
On-siteFull-timeSeniorITMinimum of 5 years of relevant experience in system administration or IT infrastructure roles.; Strong knowledge of Linux (Fedora, CentOS, or similar).; Understanding of IP networking, VPNs, and firewalls.; Familiarity with certificate management and authentication mechanisms.;…
Reaktor · Helsinki, Finland
HybridFull-timeSeniorEngineeringIn this role, you will be working as part of a Reaktor team consulting the client and supporting the product team with infrastructure automation and DevOps practices. The work may include building new infrastructure and platforms, or help to integrate the existing…
Machine Learning Engineer
2 months agoReaktor · Helsinki, Finland
HybridFull-timeMid levelData & AIHands-on experience in continuously developing and deploying machine learning models; We don’t have a hard limit on years of experience, but we’ve noticed that these Machine Learning competencies often take 3+ years to accumulate; Experience with common tools, libraries, and…
AI Developer - LLM Applications
2 months agoReaktor · Helsinki, Finland
HybridFull-timeEngineeringDesigning and implementing end-to-end LLM-enabled applications from backend architecture to user-facing components, ensuring scalability and maintainability.; Integrating commercial and open source LLMs (e.g. OpenAI, Anthropic, Meta Llama etc.) into production applications and…
Mobile Developer
3 months agoReaktor · Helsinki, Finland
HybridFull-timeEngineeringReaktor's tech community is looking for an experienced Senior Native Mobile Developer to join our Gaming & Entertainment Business Unit in Helsinki.
Senior Fullstack Developer
4 months agoReaktor · Helsinki, Finland
HybridFull-timeSeniorEngineeringStrong experience in modern frontend development, for example with TypeScript, , React or comparable technologies; Strong experience in backend service development, for example with Node.js, Java, Kotlin, Scala, Clojure, Python or comparable technologies; Experience building,…
Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.