Technical Lead (C#/.NET) – AI-Accelerated Development

Software Mind; Warszawa; Hybrid; PLN 300,000 - 520,000; Full time

Benefits offered by this job

Flexible remote cooperation

International projects

Travel opportunities

Non-corporate atmosphere

Language classes

Knowledge sharing initiatives

Private healthcare and life insurance

Multisport card

Job summary

Software Mind is seeking a Technical Lead (C#/.NET) to head the AI-accelerated development of a next-generation risk platform from Warsaw. You’ll lead an AI-first team of C#/.NET and React developers, with a Python contributor and data platform engineer, balancing leadership with about 70% hands-on coding.

You’ll deploy via Docker, Helm, and Azure DevOps pipelines to AKS, mentor engineers, and collaborate closely with the client on architecture and design reviews.

Qualifications

• 12+ years of commercial software development.
• 5+ years in a technical lead role on production systems.
• Expert in C#/.NET with hands-on coding recently.
• Proficient in Python, React and TypeScript for feature building and reviews.
• Experience with AI tooling and agentic coding workflows.

Responsibilities

• Design, build and ship production C#/.NET services, APIs and React features.
• Review Python work to the same standard as the .NET codebase.
• Use AI coding tools as primary accelerators, with automated tests.
• Deploy via Docker, Helm and Azure DevOps to AKS and integrate with Microsoft Fabric.
• Translate architecture designs into technical plans and code-level designs.
• Lead code reviews and set engineering standards for testing and tooling.
• Track status, surface risks, mentor developers through reviews and pairing.
• Act as technical point of contact with the client, leading standups and design reviews.

Skills

C#/.NET

ASP.NET Core

REST API design

Python

React/TypeScript

Docker

Kubernetes (AKS)

Azure DevOps

Terraform

AI tooling (Claude Code)

Tools

Docker

Kubernetes

Helm

Azure DevOps

Terraform

Job description

[WAP] Technical Lead (C#/.NET) – AI-Accelerated Development

Full-time

Software Mind develops solutions that make an impact for companies around the globe. Tech giants & unicorns, transformative projects, emerging technologies and limitless opportunities – these are a few words that describe an average day for us. Building cross-functional engineering teams that take ownership and crave more means we’re always on the lookout for talented people who bring passion and creativity to every project. Our culture embraces openness, acts with respect, shows grit & guts and combines cooperation with enjoyment.

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

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

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.

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