Pioneer Data Modeling at Startup Speed
Join our close-knit crew in Lauttasaari, Helsinki. We build next-generation data modeling software with small autonomous stream teams and a culture that values time together.
Bleeding-Edge Tech with Real Impact
At Ellie.ai, we are tackling one of enterprise technology's biggest bottlenecks: helping global organizations design, understand, and govern their data through semantic modeling and agentic AI. We do it without corporate red tape, inflated hierarchies, or endless committee meetings.
Our engineering team works in small, self-directed stream teams where developers own outcomes end-to-end. You interact directly with users, test bold ideas, and see the immediate business impact of every feature you ship.
Culture & Perks
Why You’ll Love Working Here
We believe high-performing teams thrive when work is engaging, tools are modern, and colleagues genuinely enjoy spending time together.
A relaxed workspace on the island of Lauttasaari with sea views, espresso, and an easy commute from central Helsinki.
Unwind with daily table tennis matches and PS5 tournaments between deep-focus engineering sprints.
Take advantage of tennis racquets, croquet, cornhole and other fun gear right outside our office doorstep.
From go-karting and archipelago outings to potluck lunches, we love spending time with each other both at and outside work.
Cross-functional units uniting developers, designers, and QA to build features autonomously without bureaucratic friction.
Direct collaboration with CTO Jaffa and others in leadership. Flexible training budget approach and great opportunity for growth.
Voices from the Team
“At Ellie, we build small autonomous stream teams where developers solve real customer problems rather than just moving tickets. We move fast, make decisions quickly, and give everyone room to grow as leaders and technical experts.”
How We Hire
Our Recruitment Process
Transparent, person-first, and designed to move quickly without bureaucratic delays.
Intro Conversation
A relaxed 30-minute video conversation with our team to discuss your background, interests, and what you want to achieve.
Problem-Solving Discussion
A practical technical conversation focusing on problem-solving, system design, and how you think. No artificial whiteboard puzzles.
Office Visit & Team Meet
Come to our Lauttasaari office to meet CTO Jaffa and prospective teammates, see the setup, and play a round of table tennis.
Swift Decision & Offer
We make decisions rapidly. Successful candidates receive direct, transparent feedback and an offer typically within 1 to 2 weeks.
Join Us
Open Positions in Lauttasaari
Explore active openings in our Helsinki stream teams or pitch your own role.
Senior Software Developer
What will you do? You’ll join our AI & Integrations stream which is the team responsible for connecting Ellie with the modern data ecosystem and enabling seamless interoperability between systems. Your focus will be on building and owning the connectivity layer of our platform: • Drive the design and implementation of connectivity layers and integrations across the data ecosystem, including APIs, MCP-based patterns, and enterprise platforms such as Collibra, Purview, Snowflake, Microsoft Fabric, and SSO. • Design, build, and maintain scalable and secure APIs for system-to-system communication. • Implement robust integration patterns (REST, webhooks, event-driven architectures). • Build and maintain integrations with enterprise data platforms and tools (e.g. Collibra, Purview, dbt, Snowflake, CData). • Implement authentication and authorization flows (SSO, OAuth2, SAML). • Ensure integrations are reliable, observable, and production-ready (monitoring, retries, error handling). • Collaborate with product, design, and engineering teams to define integration requirements and architecture. • Contribute to shaping Ellie’s integration and connectivity strategy. What we expect:
- Bachelor’s degree in Computer Science, Software Engineering, or related field.
- Hands-on experience building integrations with external systems (APIs, webhooks, data platforms).
- Strong problem-solving skills and attention to detail.
- Strong understanding of API design and system interoperability.
- Experience with authentication and identity protocols (OAuth2, SAML, SSO).
- Solid full stack development skills (React / TypeScript / Node.js or similar).
- Experience working with cloud environments and modern development practices.
- Interest in AI tools, with a pragmatic mindset — understanding both their potential and limitations, and using them to support (not replace) solid engineering practices.
- Great verbal and written communication skills in English.
Frequently Asked Questions
Our cozy office is located on the island of Lauttasaari in Helsinki, surrounded by walking paths and the sea. We maintain a flexible hybrid work model with regular in-person collaboration days.
We build a full-stack data modeling SaaS platform using modern TypeScript, Node.js, reactive web architectures, automated SQL engines, and generative AI through our Lumi assistant.
English is our daily working language across all product, engineering, and business operations. Our team includes multiple nationalities and backgrounds. You can speak with colleagues also in Spanish, Russian, Ukrainian, Chinese, French, Swedish and oh, also Finnish.
We move quickly and respect your time. From the first conversation to an offer, the process typically takes one to two weeks with zero corporate bureaucracy.
Ready to Build the Future of Data?
Whether you are an experienced lead developer or a passionate engineer, explore how our Lauttasaari team is redefining data modeling.