Backend Engineer, Senior (Rust)

Affinidi is seeking a solution-oriented Senior Software Engineer (Backend) with strong Rust experience to develop secure, scalable, and high-performance backend systems for the Affinidi Elements platform. This role involves collaborating with global teams on product, design, infrastructure, and engineering, delivering a multi-component platform, and contributing to architectural direction. The engineer will design and implement solutions for complex technical challenges, focusing on product quality, security, and performance within a fast-paced, iterative environment.

Must Have

• Develop secure, scalable, high-performance backend systems using Rust.
• Guide development of the Affinidi Elements platform.
• Design and develop production-quality, multi-component systems.
• Contribute to architectural direction and hands-on development.
• Solve complex, large-scale technical challenges.
• Drive improvements in product quality, security, and performance.
• Elevate engineering standards and mentor team members.
• Build well-tested, secure, and performant services.
• Collaborate with product, security, and engineering peers.
• Optimize performance and prevent system bottlenecks.
• Develop distributed systems using modern design patterns.
• Advocate for privacy by design and security-first principles.
• Apply asynchronous cryptography in production.
• Work with authorization/authentication domains.
• Thrive in autonomous, fast-moving startup environments.

Good to Have

• Experience in Dart.
• Knowledge of identity, verifiable credentials, or secure data exchange.
• Experience working across functions, locations, and time zones.
• Expertise in decentralized identity solutions.
• Experience building systems with advanced cryptography requirements.

Perks & Benefits

• Hybrid working model
• Flexible working hours
• Unlimited vacation policy
• Competitive compensation package
• Work within international environment
• Learning Budget
• Mobile Allowance
• Home Office Allowance
• Urban Sport Membership

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
• Proven track record in developing distributed systems 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
• 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

Bonus points:

• 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:

• Hybrid working model
• Flexible working hours
• Unlimited vacation policy
• Competitive compensation package
• Work within international environment
• Learning Budget
• Mobile Allowance
• Home Office Allowance
• Urban Sport Membership