Technical Lead - C#/.NET, AI-Accelerated Development

Job Description

Project – the aim you’ll have

Lead delivery of a next-generation risk analysis and scoring platform for a payments technology company. It combines the client’s risk rules with AI-driven, pre-scored risk feeds from a global card network over a Microsoft Fabric data estate. You’ll lead an AI-first team of C#/.NET and React developers, a Python developer and a data platform engineer – a hands-on role with about 70% coding.

Role – how you’ll contribute

• Design, build and ship production C#/.NET services, APIs and React features, taking on the hardest slices when the team is blocked
• Contribute to and review the team’s Python work, holding it to the same standard as the .NET codebase
• Use Claude Code or an equivalent agentic coding tool as your primary accelerator, backed by automated tests, and harden AI-generated code before it reaches production
• Deploy via Docker, Helm and Azure DevOps pipelines to AKS, and integrate services with the Microsoft Fabric data estate
• Translate the architecture group’s designs into technical plans, task breakdowns and code-level designs
• Run code reviews and set engineering standards for testing, review practices and AI tooling (CLAUDE.md files, custom commands, guardrails)
• Track technical status, surface risks early, and unblock and mentor developers through reviews and pairing
• Act as the team’s technical point of contact with the client: lead stand-ups, join design reviews, report status and ensure clean handoffs

Qualifications

Expectations – the experience you need

• 12+ years of commercial software development, including 5+ years as a technical lead on production systems
• Expert C#/.NET (ASP.NET Core, REST API design, async, EF Core or Dapper) with active hands-on .NET coding in the last 12 months
• Working proficiency in Python (typing, async, FastAPI, pytest) and in React and TypeScript, enough to build features and review code
• Relational database and distributed-systems skills: schema design, query tuning, transactional correctness, idempotency, failure handling
• Docker, Kubernetes (AKS preferred), Helm, CI/CD (Azure DevOps or similar) and working knowledge of Terraform
• Daily use of agentic AI coding tools (Claude Code, Cursor, Copilot Workspace, Codex or similar) and experience setting AI-tooling standards for a team – you’ll demo your workflow live
• Proven ability to lead distributed teams through design and code reviews without direct authority, with clear written communication
• Ability to operate autonomously with minimal ramp-up in an existing codebase

Additional skills – the edge you have

• Payments, card processing, risk/fraud or merchant services experience, ideally with PCI DSS-scoped systems
• Microsoft Fabric, Delta Lake or building services over analytical data stores
• Shipped LLM-backed or agentic features: RAG, LangGraph or similar, and evaluation practices
• Messaging, observability and identity: Service Bus, Event Hubs or Kafka; OpenTelemetry, Azure Monitor; OAuth2/OIDC, Entra ID
• Prior consulting or staff-augmentation experience leading a team embedded in a client organization

Additional Information

What we offer:

• Flexible and remote cooperation options
• International projects with leading global clients
• Travels related to international projects
• Non-corporate atmosphere
• Access* to language classes
• Access* to knowledge-sharing initiatives
• Access* to private healthcare and life insurance
• Access* to multisport card

*The availability and terms of individual benefits may vary depending on the chosen form of cooperation.