Senior Full-Stack Software Engineer (Python, React)

F5 Remote Jobs; Polska; Hybrid; PLN 180,000 - 320,000; Full time

Benefits offered by this job

International projects

In-office, hybrid, or remoteflexible

Medical healthcare

Recognition program

Ongoing learning & reimbursement

Well-being program

Team events & local benefits

Sports compensation

Referral bonuses

Top-tier equipment provision

Job summary

Exadel is seeking a Senior Full-Stack Software Engineer (Python, React) in Poland. You will design and build scalable web apps, drive architectural decisions, and lead technical discussions across teams.

You should bring strong Python/Node.js and modern frontend experience, with knowledge of cloud services, databases, and API/microservices. Expect collaboration with PMs, designers, and engineers on complex projects.

Qualifications

• Proficient in Python/Node.js and modern frontend frameworks (React.js, Vue.js, Next.js).
• Experience with background job processing and worker reliability.
• Hands-on cloud and database experience (AWS, SQL/NoSQL).
• Contributed to architecture, design patterns, and system reliability.

Responsibilities

• Design, build, and maintain full‑stack web applications with performance and security in mind.
• Implement new features in a well-tested, maintainable way.
• Collaborate with Product and UX to create intuitive interfaces.
• Review and implement technical solutions to meet business needs and fix issues.

Skills

Python/Node.js

React.js

Vue.js

Next.js

Cloud services

SQL/NoSQL

API/microservices

LLM APIs

Production systems

Tools

Temporal

Inngest

OpenTelemetry

ClickHouse

LangGraph

OpenAI Agents SDK

Job description

Job Details

• Company: Exadel
• Position: Senior Full-Stack Software Engineer (Python, React)
• Location: Poland

Why Join Exadel

We're an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks.

From AI platforms to digital transformation, we partner with enterprise leaders to build what's next.

What powers it all? Our people are ambitious, collaborative, and constantly evolving.

What You'll Do

• Design, build, and maintain full-stack web applications, ensuring high performance, scalability, and security
• Implement new features and enhancements in a well-tested, maintainable, and efficient way
• Collaborate with Product managers and UX designers to create intuitive, responsive, and accessible interfaces
• Review, analyze, and implement technical solutions to meet business requirements, driving resolution of issues and bugs
• Contribute to architectural decisions, API design, and system integrations
• Provide technical leadership to the engineering team - guide design discussions, perform code reviews, and support continuous improvement
• Participate in task estimation, prioritization, and planning in alignment with engineering processes

What You Bring

• Extensive professional expertise in Python/Node.js and proven experience with modern frontend frameworks (React.js, Vue.js, or Next.js)
• Background job processing: queues, retries, idempotent jobs, handling a worker that fails mid-task
• Hands-on knowledge of cloud services (preferably AWS) and database technologies (SQL/NoSQL)
• Experience in contributing to the architecture and design (architecture, design patterns, reliability and scaling) of 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 side project is fine. A simple chat interface on top of an API isn't enough
• At least one product you built from scratch and then maintained in production for a year or more

Nice to have

• Temporal, Inngest or another durable execution tool
• OpenTelemetry, ClickHouse or other tools for storing large volumes of logs and traces
• Building MCP servers or clients
• LangGraph, OpenAI Agents SDK or Claude Agent SDK
• Protection against prompt injection, sandboxing tool execution

English Language

Upper-Intermediate

Legal & Hiring Information

• Exadel is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more.
• Reasonable accommodations are available to enable individuals with disabilities to perform essential functions.
• Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs.
• Compensation details are shared with candidates at the early stage of the recruitment process.
• The offer is not binding until a signed contract is in place.

Your Benefits at Exadel

Exadel benefits vary by location and contract type. Your recruiter will fill you in on the details.

• International projects
• In-office, hybrid, or remote flexibility
• Medical healthcare
• Recognition program
• Ongoing learning & reimbursement
• Well-being program
• Team events & local benefits
• Sports compensation
• Referral bonuses
• Top-tier equipment provision

Exadel Culture

We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.