Om tjänsten
REAKTOR'S AWARD-WINNING TECH COMMUNITY IS LOOKING FOR AI DEVELOPERS TO JOIN US IN HELSINKI.
If you thrive on applying cutting-edge AI technologies, building LLM-powered applications, and driving projects through the full
software development lifecycle — and you’re passionate about solving real human problems with a holistic approach — we’d love to
meet you. Join us to experience a truly collaborative, low-hierarchy environment where your curiosity and ideas can make a real
impact.
AS AN AI DEVELOPER AT REAKTOR, YOUR JOB IS TO BE AN EXPERT IN A RANGE OF AI-RELATED SOFTWARE DEVELOPMENT RESPONSIBILITIES SPANNING
THE ENTIRE SOFTWARE DEVELOPMENT LIFECYCLE, FROM FRONT-END TO PRODUCTION.
Your daily tasks include:
- Designing 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
workflows, using APIs or fine-tuning.
- Working with end-to-end RAG pipelines, including embeddings, vector databases (e.g. PostgreSQL + pgvector, chromaDB, pinecone),
robust prompt engineering strategies and guardrails
- Collaborating with cross-functional teams, contributing to the development of AI use cases to address complex business
challenges
- Working together with the client’s tech and business teams and helping them to pick the right technologies suitable for their
needs.
- Other software development-related tasks like contributing to the overall software architecture and design, building test
automation and debugging problems.
YOU ARE A CURIOUS-MINDED AI DEVELOPER WHO IS COMFORTABLE WORKING WITH LLMS, BACKEND, AND FRONT-END OF AN APPLICATION.
ADDITIONALLY, YOU UNDERSTAND THE ROLE OF INFRASTRUCTURE AND UNDERSTAND THE UNDERLYING WORKINGS OF TRANSFORMER-BASED MODELS.
To thrive in this position, you’ll need:
- Experience working with AI software development technologies (LLMs, backend, frontend, ops, and consulting skills) in a
production environment.
- Experience in deploying AI applications in cloud environments (Azure, AWS, GCP) with containerization/orchestration (Docker,
Kubernetes)
- We don’t have a hard limit on years of experience, but we’ve noticed that some of these competencies take several years to
accumulate.
RE: Technologies in our projects
- Some projects require proficiency in Python or Node.js/TypeScript, including experience with frameworks like LangChain, FastAPI
or LlamaIndex.
- Our philosophy is that tech is a tool. This role is quite new to the industry and there will be some grey areas when it comes
to exact techs in our projects. Do not let lack of a specific technology hinder you from applying to this job.
Why join us?
For two decades, we’ve been developing qualities and capabilities for adapting, reacting, and supporting change – building Reaktor
to hold up in a fast-paced environment while ensuring the well-being of our people.
At Reaktor, you'll have the opportunity to work across a range of industries, such as Healthcare, the Public Sector, Industrial
and Retail. You might also be collaborating with clients in Defense & Security, Aero or Gaming & Entertainment.
Read more about the different industries we work with here.
While working at Reaktor, we’ll provide you with:
- The ability to impact how you work. Together with the client, your team chooses the approach, technologies, and methodologies
you think will work best in any given situation.
- A sustainable work-life balance and support for your daily life outside of work. (e.g., free moving day, Reaktor car share,
sick child care services, office space to use for your private events, etc.).
- An opportunity to grow as a professional. In addition to the day-to-day work, we offer internal training courses, community
events, and 15-minute coffee breaks to discuss hot topics in tech and design.
- 300+ hobby clubs, from winter swimming and running to knitting and archery, that bring people together outside of (and
sometimes inside) office hours. Many of these are supported by Reaktor.
Diversity, equity, and inclusion
Together, we are committed to making Reaktor an environment that embraces and values all of our employees for the whole of who
they are. We encourage applicants from all backgrounds to apply, knowing that studies show that members of underrepresented
communities don’t apply for jobs unless they fully satisfy all of the requirements. If you're thinking twice about applying for
this reason, we invite you to send us your application anyway. You could be just the person we're looking for.
Read more about our DEI work here.
Interested? Drop us a line – We'll be happy to hear from you!
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Lönekalkylator 2026
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