Senior Full Stack Engineer (Backend)

We're looking for a Senior Full Stack Engineer to join our Core Experience team and contribute to the evolution of Safe{Wallet}, a leading smart wallet in the Ethereum ecosystem. You'll take end-to-end ownership of features, from conception through to production, with a focus on backend development while also contributing across the stack.

Overview

Department

Engineering

Job type

Full time

Compensation

Salary not specified

Location

Berlin, Germany, Western Europe

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About Safe

Safe is redefining the future of self-custodial onchain treasury management. It currently holds $>60B+ in onchain assets. Safe{Wallet} web and mobile is the de-facto standard for crypto native organizations, individuals and groups to co-manage assets via Multi-sig. Safe{Wallet} infrastructure is widely used by developers integrating Safe. It is used for multi-million dollar treasury operations and governance by top protocols like World, Aave, Balancer and Gnosis. With more innovations in security and user experience, Safe is poised exponential growth in DeFi and onchain asset management.

What You Will Be Doing

Build and maintain backend services supporting the Safe{Wallet} app

Contribute to frontend/mobile development when needed (React/React Native)

Own the lifecycle of features from design to deployment and monitoring

Collaborate closely with staff engineers, product managers, and designers

Debug and resolve issues across services and infrastructure boundaries

Share knowledge and support the team's learning culture

What You Will Bring

Strong experience with TypeScript and backend/frontend systems

Prior experience in Web3 and Ethereum-based ecosystems

Proven success in developing and shipping features from scratch

Understanding of software principles: SOLID, DRY, clean code, algorithms

Must-Have Skills

TypeScript (Node.js)

System Architecture (Backend & Frontend)

Web3 tooling and concepts

Ownership mindset and proactive problem solving

Clear communication and team alignment

Nice to Have

Experience with React / React Native

Docker and DevOps familiarity

Computer Science degree or equivalent knowledge

Core Competencies

Owner Mentality:Takes full responsibility for outcomes, not just tasks

Full Stack Problem Solver:Debugs and resolves issues across multiple tech layers

Collaborative Communicator:Communicates clearly, escalates early, fosters shared understanding

Curious & Web3 Fluent:Demonstrates a strong understanding of Web3 and eagerness to explore new tools

Humble Expert:Balances deep expertise with openness to feedback and learning

Agile Self-Manager:Organises work effectively in async, fast-paced environments

What We Can Offer You

Personalise your home office with a dedicated budget! Choose from a sleek desk, top-notch headphones, a comfy chair, and more. We're committed to creating a workspace that inspires you.

Take the time off you need no matter where you work. All of our contributors get 30 vacation days by default, with public holidays in addition.

Invest in yourself with our personal education and conference budgets. Stay ahead of the curve by attending conferences, workshops, and courses that align with your professional growth.

Unleash your creativity! Spend Friday afternoons diving into research or working on a side project within our exciting ecosystem. It's the perfect opportunity to explore new ideas and contribute to innovative endeavours.

Embrace work-life balance with our flexible working schedules. We understand that everyone has unique needs, and our hybrid work policies empower you to choose a working style that suits you best.

Please apply with your English resume.

Variety is the spice of life and a celebrated component of our culture. At Safe, we strive to create an inclusive environment that empowers our employees. We believe that our products and services benefit from our diverse backgrounds and experiences and are proud to be an equal opportunity employer: all qualified applicants are considered for positions regardless of race, ethnic origin, age, religion or belief, marital status, gender identification, sexual orientation, or physical ability.