Senior Software Engineer (Backend)

Job description

In a world where synthetic content and digital fraud are exploding, someone needs to stand guard at the gates of digital identity. Our client is building the invisible infrastructure that keeps the digital world trustworthy—and they need a backend architect who can think like both a builder and a defender.

This isn’t just another CRUD API job. You’ll be designing systems that process millions of identity verifications, building defenses against sophisticated fraud attempts, and creating the backbone for AI-powered security solutions that protect real people’s digital lives.

About Our Client

Our client is a global technology company at the forefront of AI-driven identity security. They’ve built a reputation for running cutting-edge machine learning directly on devices, creating seamless user experiences while maintaining fortress-level security. With operations spanning multiple continents and processing hundreds of millions of identity documents annually across 70+ countries, they’re solving identity verification at true global scale.

Their technology powers critical verification workflows for major enterprises, and their expertise in computer vision and fraud detection makes them a trusted partner in high-stakes security environments.

Responsibilities

Build the Foundation of Digital Trust You’ll architect and optimize high-performance backend services that power real-time biometric verification workflows. Think distributed systems processing massive volumes of sensitive data with zero tolerance for downtime.

Craft Developer-First APIs Design and build APIs that development teams actually want to use. You’ll create the integration layer that connects frontend applications, mobile SDKs, and third-party services seamlessly.

Think Like an Attacker, Build Like a Defender Adopt an adversarial mindset to identify vulnerabilities before bad actors do. You’ll help develop ML-powered defenses against increasingly sophisticated fraud attempts and adversarial attacks.

Own the Full Lifecycle From initial architecture decisions to production monitoring, you’ll have genuine ownership over the systems you build. This means real impact, real responsibility, and real opportunities to shape the product direction.

Collaborate Across Disciplines Work directly with ML researchers, security experts, DevOps engineers, and product teams. You’ll be the bridge between cutting-edge research and production-ready systems.

What Success Looks Like

You thrive when building production systems that millions of users depend on. You understand that great backend engineering isn’t just about making things work—it’s about making them work reliably, securely, and at scale.

Requirements

Technical Foundation

• Several years building and operating production software systems
• Strong computer science fundamentals: algorithms, data structures, systems design
• Solid software development practices: version control, testing, code reviews
• Experience with RESTful API design and performance optimization
• Hands-on experience with distributed systems and microservices architectures

Infrastructure & Tools

• Proficiency with cloud platforms (GCP preferred, AWS/Azure welcome)
• Container orchestration with Kubernetes and Docker
• Infrastructure-as-code and automation mindset
• Experience with both SQL and NoSQL databases
• Familiarity with messaging systems (Pub/Sub, RabbitMQ, Kafka)

Collaboration & Adaptability

• Strong communication skills in distributed, cross-functional teams
• Adaptability and eagerness to learn new technologies
• Ability to work effectively across time zones and cultures

Nice to have Qualifications (not Required):

Language Expertise

• Hands-on experience with .NET and C# (including latest versions)
• Python or C++ experience
• Understanding that strong fundamentals matter more than specific language knowledge

Domain Experience

• Previous work in identity verification, fraud detection, or high-security environments
• Familiarity with regulatory compliance requirements
• Understanding of biometric systems and security protocols

Operations & Monitoring

• Experience with observability tools (Prometheus, Grafana, OpenTelemetry)
• DevOps and CI/CD pipeline experience
• Infrastructure automation and monitoring expertise

Additional Comments

What You’ll Gain

Ownership That Matters Equity participation for all full-time employees—because when the company grows, everyone should benefit.

Flexibility First

• Unlimited PTO policy designed around trust and results
• Flexible work arrangements—remote, hybrid, or office-based
• Location-specific benefits tailored to your needs and preferences

Growth & Development

• Internal learning and development programs
• Supportive environment that encourages experimentation and learning
• Opportunity to work with cutting-edge AI and security technologies

Global Impact Your code will help secure digital identities for hundreds of millions of people worldwide. In an age of increasing digital fraud, you’ll be part of the solution.