Senior Fullstack Engineer

United States Digital Space LLC; Helsinki; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Salary & Equity

Lunch & Wellness

Flexible hours

Equity grants

Job summary

United States Digital Space LLC is seeking a Senior Fullstack Engineer to contribute to the Tooling and Releases squads. You will design secure, scalable internal applications powering the company’s rollout capabilities and AI-powered tooling hub.

This hybrid role favours Helsinki, Tampere, or Oulu, with the majority of the team located in Finland; exceptional candidates abroad will be considered. You will lead frontend excellence with TypeScript (React or Vue) and Vite, build robust backend

Qualifications

• 5+ years of professional software development experience, with a proven track record of delivering complex full-stack projects.

Responsibilities

• Design and implement end-to-end systems powering rollout capabilities and internal hubs.
• Lead frontend excellence with TypeScript, React or Vue, and Vite.
• Develop high-performance backend services for millions of users.
• Drive engineering excellence by adopting AI across the org.
• Collaborate with PMs and engineering teams to translate internal needs into tooling.
• Own infra and delivery with Pulumi/Helm and modern CI/CD.

Skills

Experience 5+ yrs

AI-Native proficiency

TypeScript

React

Vue

Python

Rust

SQL

NoSQL

AWS

DevOps

CI/CD

English comms

Tools

Pulumi

Helm

S3

Job description

Our mission at the company is to empower every person to own their inner potential. Our award-winning products help our global community gain a deeper knowledge of their readiness, activity, and sleep quality by using their company Ring and its connected app. We've helped millions of people understand and improve their health by providing daily insights and practical steps to inspire healthy lifestyles.

Empowering the world starts with living our values and empowering our team. As a quickly growing company focused on helping people live healthier and happier lives, we ensure that our team members have what they need to do their best work — both in and out of the office.

We are part of the software engineering Core Platform mission — the heartbeat of the company. Core Platform drives operational excellence by delivering capabilities that empower teams to build securely and scale reliably without compromising speed. 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 the company’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 the company’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 the company 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 the company, we care about you and your well-being. Everyone here at the company has a ring of their own and we are continually looking to improve employee health.

Together we will continue to define the company 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 the company 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

Due to the holiday season, there may be delays in the recruitment process during July 2026.

The company 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 the company 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.