14 days ago
Poland (city not specified)Senior
Responsibilities
- Design, build, and maintain scalable full-stack web applications.
- Implement well-tested, maintainable, and efficient features and enhancements.
- Collaborate with product managers and UX designers on responsive, accessible interfaces.
- Analyze technical issues and implement solutions for business requirements.
- Contribute to architecture, API design, system integrations, reliability, and scaling.
- Provide technical leadership through design discussions, code reviews, and continuous improvement.
- Participate in estimation, prioritization, and engineering planning.
Requirements
- Extensive professional expertise in Python or Node.js.
- Professional experience with modern frontend frameworks such as React.js, Vue.js, or Next.js.
- Knowledge of background job processing, queues, retries, idempotent jobs, and worker-failure handling.
- Hands-on experience with cloud services, preferably AWS, and SQL or NoSQL databases.
- Experience contributing to architecture and design for new and existing systems.
- 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 at least one year.
- 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 proficiency.
Benefits
- International projects.
- In-office, hybrid, or remote flexibility.
- Medical healthcare.
- Recognition program.
- Ongoing learning and reimbursement.
- Well-being program.
- Team events and local benefits.
- Sports compensation.
- Referral bonuses.
- Top-tier equipment provision.
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.