Senior Ai-first Engineer

O projekcie: We are looking for a Senior AI-first Engineer who combines deep technical expertise with a genuine, hands-on approach to AI-assisted development. You will work across varied client engagements — from modernizing legacy systems to architecting new products — and are expected to contribute at a high level regardless of project context. The ideal candidate has built a real, personalized AI development workflow — including custom skills, reusable prompt templates, and project-level instructions — and continues to refine it. Out-of-the-box tool usage is not sufficient for this role. Wymagania: Requirements - Hands-on experience with Claude Code, GitHub Copilot, Cursor, or equivalent AI coding assistants  - Ability to create custom skills and sub-agents and orchestrate multiple AI agents in parallel for concurrent task execution  - Strong prompt engineering skills; able to produce reliable, high-quality output and critically evaluate AI-generated results  - Production-grade .NET / C# (REST APIs, middleware, dependency injection) with solid understanding of OAuth 2.0, OpenID Connect, and JWT  - Deep proficiency in JavaScript and TypeScript   - 2+ years of hands-on production experience with React   - Strong grasp of state management, asynchronous patterns, and frontend testing  - Confident designing systems across monoliths, microservices, and distributed architectures  - Working knowledge of DDD, CQRS, Event Sourcing, and event-driven systems, including message brokers (Kafka, RabbitMQ, Azure Service Bus, or similar)  - Hands-on use of Docker and working knowledge of Kubernetes, along with CI/CD pipelines (GitHub Actions, Azure DevOps, or similar)  - Experience with cloud platforms (Azure, AWS, or GCP) and observability practices (structured logging, distributed tracing, alerting)  - Solid background with SQL databases and ORMs; familiarity with NoSQL is a plus  - Additional exposure to Python, Java, or Node.js is highly desirable  - Clear communication skills in English (B2+), both written and spoken; comfortable in client-facing environments Codzienne zadania: - Design, develop, and maintain full-stack features with high standards of quality, performance, and reliability  - Apply AI tools throughout the workflow: generation, refactoring, review, testing, and research  - Contribute to architectural decisions — technology selection, system design, and trade-off analysis  - Conduct thorough code reviews and uphold engineering best practices across the team  - Identify risks, bottlenecks, and security concerns proactively and propose solutions  - Work directly with clients in English — requirements clarification, technical discussions, progress updates  - Mentor junior and mid-level engineers through day-to-day guidance and knowledge sharing  - Stay current with AI tooling developments and contribute findings to the broader team