Sigmalion

Based in Kharkiv, Ukraine, Sigmalion operates as a small, remote-first team of senior engineers serving clients in the EU, UK, and US. The agency positions itself around two client situations: funded startups building AI-powered products who need engineering capacity without expanding headcount, and scale-ups or in-progress projects that have stalled, gone over budget, or lost momentum and require a team to step in and get delivery back on track. The team is described as senior-only, with no junior developers assigned to client work. Technical work centers on AI-native development and full-stack engineering. This includes LLM integration, retrieval-augmented generation (RAG) pipelines, and autonomous agent systems, built using tools such as the Vercel AI SDK, LangChain.js, OpenAI models (GPT-4o, o1) and Claude 3.5. Application infrastructure is built with Next.js, Node.js, TypeScript, Fastify/NestJS, and PostgreSQL via Prisma, with vector search and embeddings handled through pgvector and Pinecone, caching via Redis, and realtime data through Supabase. Deployment and operations rely on Vercel, AWS, Docker, and GitHub Actions for CI/CD, alongside Kubernetes for cloud-scale infrastructure. The agency also offers a process-analysis engagement that maps client workflows, identifies operational bottlenecks, and produces a custom implementation roadmap for AI adoption tailored to a client's existing stack and team.