Senior AI-First Full-Stack Engineer - Hybrid SaaS

Vitec Tietomitta Oy; Helsinki; Hybrid; EUR 120,000 - 180,000; Full time

Job summary

Vitec Tietomitta Oy is seeking a senior software engineer in Helsinki to shape architecture, product decisions, and hands-on delivery. The role blends independent architectural work with hands-on coding in Python and TypeScript/React, leveraging AI agents for implementation while you provide critical review and judgment.

The ideal candidate has 10+ years of production software experience across backend and frontend, extensive SaaS multi-tenant exposure, and strong English communication.

Qualifications

• Senior-level (10+ years) shipping production software end-to-end, backend and frontend.
• Experience delivering multi-tenant SaaS at scale with releases and migrations.
• Fluent, daily use of AI coding agents; review of agent output.
• Strong architectural understanding and ability to justify design decisions independently.
• Proactive, customer-driven product behavior and stakeholder engagement.
• Hands-on proficiency in Python and TypeScript/React in a full-stack stack.
• Fluent English as working language.

Skills

Senior level 10+ years

Multi-tenant SaaS at scale

AI coding agents use

Architectural understanding

Customer-driven product behavior

Python and TypeScript/React

Fluent English

Job description

Vitec Tietomitta Oy is seeking a senior software engineer in Helsinki to shape architecture, product decisions, and hands-on delivery. The role blends independent architectural work with hands-on coding in Python and TypeScript/React, leveraging AI agents for implementation while you provide critical review and judgment.

The ideal candidate has 10+ years of production software experience across backend and frontend, extensive SaaS multi-tenant exposure, and strong English communication.