Senior Full-Stack Software Engineer (Python, React)

Posted 7 Hours Ago
Be an Early Applicant
Hiring Remotely in Poland
Remote
Senior level
Mobile • Software
The Role
Design, build, and maintain secure, scalable full-stack web applications using Python or Node.js and modern frontend frameworks. Lead architecture and API design, develop microservices and integrations, troubleshoot issues, review code, and guide engineering decisions. Build reliable background jobs and LLM-powered products, collaborate with product and UX teams, and contribute to planning, estimation, and continuous improvement.
Summary Generated by Built In
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.

Skills Required

  • Extensive professional expertise in Python or Node.js
  • Professional experience with 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
  • Experience with SQL and/or NoSQL databases
  • Experience contributing to architecture and system design, 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
  • At least one product built from scratch and maintained in production for at least one year
  • Upper-Intermediate English language proficiency
  • Experience with Temporal, Inngest, or another durable execution tool
  • Experience with OpenTelemetry, ClickHouse, or other tools for storing large volumes of logs and traces
  • Experience building MCP servers or clients
  • Experience with LangGraph, OpenAI Agents SDK, or Claude Agent SDK
  • Experience protecting against prompt injection and sandboxing tool execution

Exadel Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Exadel and has not been reviewed or approved by Exadel.

  • Fair & Transparent Compensation — Base pay is viewed as fair and market-competitive, with salaries delivered reliably and on time. Payroll stability and dependable processes are repeatedly emphasized as strengths.
  • Healthcare Strength — Offerings include medical healthcare and localized insurance that are presented as solid core benefits. Mentions of PTO and, in some cases, retirement contributions reinforce the benefits foundation.
  • Flexible Benefits — Remote and hybrid work options feature prominently as part of the package. Learning reimbursements and lifestyle perks such as well-being initiatives and sports support add adaptable elements to the offering.

Exadel Insights

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The Company
HQ: Walnut Creek, CA
1,549 Employees
Year Founded: 1998

What We Do

For more than 20 years, Exadel has been delivering Digital Transformation services, enterprise and custom software solutions for Fortune 500 clients, including HPE, Deloitte, Home Depot and McKesson. With 20+ locations and delivery centers across the US and Europe, Exadel solves the most complex engineering problems using Agile methodologies, offering a scalable and skilled mix of multi-shore resources at the industry's most competitive price. Exadel’s digital transformation solutions and services help chart new strategies that are built upon creative thinking, cutting-edge design, and technical innovation, designed for the growing digital landscape of business. Enterprise Services - Digital Transformation Experts - Developing mission-critical software and mobile applications - Advising companies on how best to leverage open source technology - Helping companies plan and implement migrations to better technology stacks - Providing QA, automation, and testing services for application development - Supporting and maintaining applications and systems for companies - Providing on-line training and mentoring to companies - Assisting companies in evaluating their current enterprise software architecture and planning for improvements or new systems.

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