Staff Backend Engineer with Rust (m/f/d)

Affinidi; City Of London; On-site; GBP 70,000 - 90,000; Full time

Job summary

A leading technology company in London is looking for a Staff Software Engineer (backend) to lead development on their platform. The ideal candidate will have expertise in Rust and TypeScript, strong problem-solving skills, and the ability to design high-performance systems. Enjoy competitive compensation and an unlimited vacation policy. Join a fast-paced, collaborative international team to innovate in data ownership solutions.

Benefits

Unlimited vacation policy

Competitive compensation package

Learning Budget

Qualifications

• Proven experience in performance optimization and diagnosing system bottlenecks.
• Strong backend development skills, particularly in Rust.
• Deep knowledge of TypeScript/Node.js; Dart experience preferred.
• Expertise in cloud computing and deploying microservices.

Responsibilities

• Build and deliver secure, high-quality features for the Affinidi Elements Platform.
• Design and implement solutions to complex technical challenges.
• Influence architectural direction and technical strategy.
• Guide the team in building well-tested, secure services.

Skills

Rust

TypeScript

Dart

Performance optimization

Cloud computing (AWS)

Microservices

Asynchronous cryptography

Job description

Overview

London, England, United Kingdom

About the Company

Affinidi is a technology company dedicated to changing data ownership for good. We empower businesses and individuals with control and ownership of their data, with a comprehensive approach to managing their holistic identity – accounting for all aspects of their digital footprint while ensuring privacy and security.

Affinidi’s technology enables users to benefit from decentralised digital identity solutions. We believe that everyone has the right to own and control their data, and we are committed to creating a trusted digital credentials ecosystem that empowers businesses and individuals to securely exchange data and services across borders and industries.

About the role

We are in search of a solution-oriented staff software engineer (backend) with deep expertise in Rust and TypeScript, and ideally experience with Dart, to lead the development of secure, scalable, and high-performance backend systems for the Affinidi Elements platform. In this role, you will work with global peers on teams dedicated to areas of the product portfolio, from product, design, infrastructure, architecture, and back/front-end engineering teams. You will be responsible for the continued enhancement and development of a multi-component platform, where your expert skills in designing, architecting, and building quality systems will intersect with your hands-on coding, performance testing, and integrating experience.

Our work culture at Affinidi is shaped by the following tenets:

• We are unapologetically customer-focused
• We invest in cultures and teams to enable high performance
• Embraces experimentation and builds fast
• We have the courage to be misunderstood
• We work together to unlock data

What’s in it for you

• Build and deliver secure, high-quality features and improvements for the Affinidi Elements Platform using Rust, TypeScript, and Dart
• Influence architectural direction and long-term technical strategy while staying hands-on with development
• Design and implement solutions to complex, large-scale technical challenges
• Identify and drive the most critical improvements in product quality, security, and performance
• Raise the bar for engineering excellence through mentorship, code reviews, and workshops
• Guide the team to build well-tested, secure, and performant services
• Establish and refine best practices for high-scale distributed systems
• Collaborate closely with product, security, and engineering peers in a fast-paced, iterative environment

You will be a great match if you

• Proven experience with performance optimization and a track record of diagnosing and preventing system bottlenecks
• Strong backend development skills with Rust as a core expertise
• Deep knowledge of TypeScript/Node.js; Dart experience strongly preferred. Familiarity with C# or Go is a plus
• Expertise in cloud computing (AWS preferred) and cloud-native environments
• Proven track record in designing and deploying microservices using modern design patterns
• Skilled in technical documentation (C4 Model, ADRs) and clear communication of architectural decisions
• Strong advocate for privacy by design, security-first principles, and high-performance systems
• Expertise in applying asynchronous cryptography in production-grade products
• Experience with authorization/authentication domains; knowledge of identity, verifiable credentials, or secure data exchange is a strong plus
• Comfortable thriving in autonomous, fast-moving startup environments and collaborating across global teams
• Experience working across functions, locations, and time zones
• Expertise in decentralized identity solutions
• Experience building systems with advanced cryptography requirements

What can you expect from us

• Unlimited vacation policy
• Competitive compensation package
• Work within international environment
• Learning Budget

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Demographic Questions

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