Senior Fullstack Engineer

Femtech Insider Ltd.; Helsinki; On-site; EUR 60,000 - 90,000; Full time

Benefits offered by this job

Competitive salary and equity packages

Lunch and wellness benefits

Flexible working hours

Employee discount for Oura rings

Job summary

A forward-thinking tech company in Helsinki is seeking a Senior Fullstack Engineer to join their Tooling and Releases squads. The ideal candidate will have over 5 years of experience in software development, demonstrating frontend expertise, experience with AI technologies, and robust backend skills. Responsibilities include building secure internal applications and driving engineering excellence. This is a hybrid role with a focus on innovation and collaboration, offering a competitive salary and benefits including a wellness package and work-life balance.

Qualifications

• 5+ years of full-stack software development experience.
• Deep experience with agentic workflows and AI tools.
• Strong proficiency in building production-grade APIs.

Responsibilities

• Design and implement secure internal applications.
• Lead frontend projects using TypeScript (React or Vue).
• Develop back-end services for critical configurations.

Skills

Frontend Excellence

AI-Native Proficiency

TypeScript expertise

Backend API skills

Database skills

Tools

AWS

Python

Rust

PostgreSQL

Job description

We are looking for a Senior Fullstack Engineer to contribute to the Tooling and Releases squads of the mission. We provide business-critical capabilities that power Oura’s state-of-the-art rollouts of new features, world-class Member eXperience troubleshooting, and next gen internal hub for launching bespoke tooling applications with the power of AI.

This is a hybrid role with preferred locations of Helsinki, Tampere or Oulu where the majority of our team is located. We will also consider outstanding candidates in the rest of Finland.

While we have high expectations for this demanding role, we recognize that few candidates will perfectly match every single requirement. For this role, we put relative emphasis on frontend tech excellence.

What You will do:

• Design and Implement End-to-End Systems: Build secure & scalable internal applications that power Oura’s rollout capabilities, troubleshooting workflows, and our next-gen AI-powered internal hub.
• Lead Frontend Excellence: Create sophisticated, performant UIs using TypeScript (React or Vue) and Vite to ensure a seamless, modular and future-proof internal tool ecosystem.
• Develop High-Performance Services: Create high-availability, low-latency backend services to deliver critical configurations and content to millions of Oura members and serve Ouranians needs.
• Drive Engineering Excellence: Take a leading role in leveraging future technologies, especially AI, across the software organization and championing engineering excellence through continuous operational improvements.
• Collaborate Across Missions: Work closely with Product Managers and engineering teams (Mobile, Cloud, Firmware, etc.) to translate complex internal needs into delightful developer experiences.
• Own Infrastructure & Delivery: Manage and scale our cloud environment using Infrastructure as Code (Pulumi, Helm) and modern CI/CD patterns to ensure reliable, automated deployments.

We would love to have You on our team, if You have:

• Extensive Experience: 5+ years of professional software development experience, with a proven track record of delivering complex full-stack projects.
• Outstanding AI-Native Proficiency: Deep experience with agentic workflows and tools (e.g., Cursor, agentic CLIs), treating AI as a high-output collaborator to fundamentally reshape and accelerate the software lifecycle across craft and organization.
• Mastery of Modern Web Tech: Deep expertise in TypeScript and modern frontend frameworks (React or Vue), including experience with state management and micro-frontend architectures.
• Robust Backend Skills: Strong proficiency in building production-grade APIs and services with Python or Rust.
• Database Versatility: Solid competence working with both SQL (PostgreSQL) and NoSQL (DynamoDB, Firestore, Redis) databases.
• Cloud & DevOps Fluency: Practical experience with AWS (EKS, SQS/SNS, S3) and containerization, along with a "DevOps mindset" toward monitoring (Sentry, OTEL) and automation.
• Ownership Mentality: A proactive attitude with the ability to take a rough idea and turn it into a concrete, high-impact product.
• Passion for DevX: A genuine interest in improving developer productivity through easy-to-use tooling and great engineering practices.
• Communication: Excellent verbal and written communication skills in English.

What we offer:

At Oura, we care about you and your well-being. Everyone here at Oura has a ring of their own and we are continually looking to improve employee health.

Together we will continue to define Oura as a company where you can:

• Contribute to a product that improves the lives of millions of people across the globe
• Achieve great work-life balance and inspired work by focusing on what is important
• Grow on your chosen career path and sharpen your abilities - be it technical, people, or leadership skills

Benefits

• A competitive salary and equity packages
• Lunch and wellness benefits
• Flexible working hours + work-life balance
• Collaborative, smart teammates and innovative environment
• An Oura ring of your own + employee discount for friends and family
• Eight extra days time-off per year to devote to personal wellness
• Latest equipment of your choice

Oura is proud to be an equal opportunity workplace. We celebrate diversity and are committed to creating an inclusive environment for all employees. Individuals seeking employment at Oura are considered without regard to age, ancestry, color, gender (including pregnancy, childbirth, or related medical conditions), gender identity or expression, genetic information, marital status, medical condition, mental or physical disability, national origin, protected family care or medical leave status, race, religion (including beliefs and practices or the absence thereof), sexual orientation, military or veteran status, or any other characteristic protected by federal, state, or local laws. We will not tolerate discrimination or harassment based on any of these characteristics.

We will work to ensure individuals with disabilities are provided reasonable accommodation to participate in the interview process, to perform essential job functions, and to receive other benefits and privileges of employment.