13 days ago
Poland (city not specified)Senior
Responsibilities
- Design, build, and maintain scalable, secure, high-performance full-stack web applications.
- Implement well-tested, maintainable, and efficient features and enhancements.
- Collaborate with product managers and UX designers to create intuitive, responsive, and accessible interfaces.
- Analyze and implement technical solutions while resolving issues and bugs.
- Contribute to architecture, API design, system integrations, reliability, and scaling decisions.
- Provide technical leadership through design discussions, code reviews, and continuous improvement.
- Participate in task estimation, prioritization, and engineering planning.
Requirements
- Extensive professional expertise in Python or Node.js and modern frontend frameworks such as React.js, Vue.js, or Next.js.
- Experience with background job processing, including queues, retries, idempotent jobs, and worker failure handling.
- Hands-on knowledge of cloud services, preferably AWS, and SQL or NoSQL database technologies.
- Experience contributing to architecture and design for new and existing systems, including design patterns, reliability, and scaling.
- Deep understanding of API development, microservices, and system integration.
- At least one project using LLM APIs with tool calling and streaming; a simple chat interface is insufficient.
- At least one product built from scratch and maintained in production for one year or more.
- Preferred experience with Temporal, Inngest, OpenTelemetry, ClickHouse, MCP servers or clients, LangGraph, OpenAI Agents SDK, Claude Agent SDK, prompt-injection protection, or sandboxed tool execution.
- Upper-Intermediate English language proficiency.
Benefits
- International projects.
- In-office, hybrid, or remote flexibility.
- Medical healthcare.
- Recognition, well-being, team events, sports compensation, and referral programs.
- Ongoing learning and reimbursement.
- Top-tier equipment provision.
- Benefits vary by location and contract type.
About Exadel
Exadel provides custom software development, consulting, and managed services for enterprises, covering digital products, data/AI, customer experience, and regulatory alignment. Headquartered in Walnut Creek, California, it was founded in 1998 and is owned by Sun Capital Partners. The company delivers strategy, design, and engineering for web, e-commerce, and financial services platforms across global delivery locations.