Senior Software Engineer

Job description

Role A Senior Software Engineer will build and operate full-stack software for an AI-native platform modernizing procurement and distribution across defense, aerospace, and industrial supply chains. They will own customer-facing features end to end, from understanding the operational problem through implementation, testing, deployment, and follow-up in production. The role starts in Warsaw with an expected relocation to the United States within approximately six months. The company provides E-2/O-1 visa sponsorship and covers relocation costs. Responsibilities • Design, implement, test, deploy, and operate full-stack product features. • Build frontend experiences with TypeScript, JavaScript, React, Next.js, or Svelte. • Develop backend services and APIs with Node.js or Python. • Design PostgreSQL schemas, write production SQL, and improve query performance. • Build integrations and data-ingestion workflows for fragmented operational systems, documents, APIs, and business data. • Translate customer and operational requirements into maintainable technical solutions. • Own delivered features through production, including monitoring, debugging, incident resolution, and iteration. • Communicate technical proposals, delivery estimates, risks, and trade-offs clearly to founders, deployment strategists, and engineers. • Maintain high standards for code quality, testing, security, reliability, and long-term maintainability. • Use AI coding tools to improve development speed while validating generated code through review, tests, and production safeguards. • Contribute to a fast-moving product environment where engineers work with incomplete requirements and take responsibility for outcomes. • Relocate from Warsaw to the United States within approximately six months of starting. Required experience • Professional experience building production software as a full-stack engineer. • Hands-on TypeScript or JavaScript experience. • Hands-on React, Next.js, or Svelte experience. • Hands-on backend development with Node.js or Python. • Production experience with PostgreSQL and SQL. • Evidence of owning features or systems from initial implementation through production operation. • Experience designing or implementing APIs, integrations, or data-ingestion workflows. • Ability to communicate technical decisions, delivery commitments, risks, and trade-offs clearly. • Evidence of independently building software outside narrowly defined ticket work, such as a shipped side project, open-source contribution, hackathon project, or zero-to-one product. • Confirmed willingness to relocate to the United States within approximately six months. Technical environment • TypeScript and JavaScript. • React, Next.js, and Svelte. • Node.js and Python. • PostgreSQL and SQL. • Full-stack SaaS applications. • APIs, integrations, and data-ingestion pipelines. • AI coding tools. • Production systems supporting complex procurement and distribution workflows. Success measures • Customer-useful features are shipped reliably from concept through production. • Implementations remain maintainable, tested, observable, and aligned with the product’s operational requirements. • Frontend, backend, database, and integration work is delivered as a coherent end-to-end system. • Production issues are diagnosed and resolved with appropriate urgency and technical rigor. • Technical decisions reduce manual operational work and improve the speed, accuracy, or reliability of customer workflows. • AI coding tools increase engineering effectiveness without lowering standards for correctness, security, or maintainability. • The engineer completes the planned relocation to the United States within the expected timeframe.