Backend Engineer, Senior (Rust)

Affinidi; Remote; GBP 70,000 - 90,000; Full time

Job summary

A cutting-edge technology firm in Greater London is looking for a Senior Software Engineer (Backend) specializing in Rust. In this role, you'll develop secure and scalable backend systems for our platform, collaborate on product and engineering efforts, and contribute to open-source solutions. Ideal candidates will have experience in performance optimization, cloud computing, and a strong commitment to security and privacy. This role promises a dynamic work environment with competitive compensation and unlimited vacation policy.

Benefits

Unlimited vacation policy

Competitive compensation package

Learning Budget

Qualifications

• Proven experience with performance optimization and diagnosing system bottlenecks.
• Strong backend development skills with Rust.
• Deep knowledge of TypeScript/Node.js; Dart experience preferred.
• Expertise in cloud computing and cloud-native environments.
• Skilled in technical documentation and clear architectural communication.
• Advocate for security-first principles and high-performance systems.
• Comfortable in fast-moving startup environments.

Responsibilities

• Build and deliver secure, high-quality features for the platform.
• Contribute to architectural direction while being hands-on in development.
• Design and implement solutions for complex technical challenges.
• Identify critical improvements in product quality, security, and performance.
• Collaborate closely in a fast-paced, iterative environment.

Skills

Rust

Performance optimization

TypeScript

Dart

Cloud computing (AWS)

Asynchronous cryptography

Authorization/authentication

Job description

Affinidiis 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 Senior Software Engineer (Backend) with demonstrable experience in Rust , to help guide 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 the product, design, infrastructure, architecture, and back/front-end engineering teams. Your responsibilities will include delivering a multi-component platform, leveraging your experience in helping to design and developing production-quality systems. This role offers the opportunity for professional growth within a high-performing team culture.

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

Further, Affinidi’s focus on the open source community, and collaboration with standards bodies to develop the next version of the internet – the Internet of Trust – guides every engineering and product decision we make.

What’s in it for you:

• Build and deliver secure, high-quality features and improvements for the Affinidi Elements Platform using Rust . Experience in TypeScript and Dart will set you above other applicants for this role
• Create standards-compliant world-class software systems and components, most of which will be open sourced as our commitment to the OSS and decentralised community
• Contribute to architectural direction while staying hands-on with development
• Help design and implement solutions to complex, large-scale technical challenges
• Identify and drive the most critical improvements in product quality, security, and performance
• Elevate engineering standards through your expertise , mentorship and commitment to best practices.
• Guide the team to build well-tested, secure, and performant services
• 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
• Expertise in cloud computing (AWS) and cloud-native environments
• 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
• Experience with 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
• Expertiseindecentralized 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

Sounds like you? Apply now!

We believe in hiring different and diverse talent and providing a safe space where everyone can share their views without fear, where differences are celebrated, and where no one is left out. Inclusive cultures are the foundation for collaboration and innovation within our team.

Privacy Notice

By applying for this position, you confirm that you have read and understood Affinidi’s Candidate Privacy Policy , and consent to the collection, use, and disclosure of your personal data for recruitment purposes, as described in thepolicy .