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senior

Full Stack Engineer

Yalantis
format:Remotecompany:Outsource
pythonreactnode.js
englishB2
experience5+ years
domainFintech
locationDnipro, Ukraine · Warsaw, Poland
> full description

We are looking for a Senior Full Stack Engineer to join a fast-growing product in the FinTech domain.

This role is a strong fit for an experienced engineer who is comfortable working across the full stack, taking ownership of features end-to-end, and solving complex product and engineering challenges with a high level of autonomy.

Responsibilities:

  • Design, build, and maintain full-stack product features using Python and React.js.
  • Take ownership of features throughout the full development lifecycle, from technical discovery and solution design to implementation and production support.
  • Work closely with engineering and product stakeholders to translate business needs into practical technical solutions.
  • Contribute to architectural decisions and help improve the scalability, reliability, and maintainability of the product.
  • Identify technical risks, evaluate trade-offs, and propose pragmatic solutions.
  • Collaborate with other engineers through code reviews, technical discussions, and knowledge sharing.
  • Support and guide team members when needed, even without a formal leadership title.
  • Use modern AI-powered development tools and automation to improve engineering efficiency while critically validating generated outputs.
  • Communicate progress, blockers, and technical decisions clearly in a remote working environment.

Requirements:

  • 5+ years of commercial software development experience.
  • Strong hands-on experience with Python and React.js.
  • Solid full-stack engineering background and the ability to work confidently across backend and frontend systems.
  • Experience with Node.js or readiness to work with it when required.
  • Experience designing and delivering production-ready features end-to-end.
  • Good understanding of software architecture, API design, databases, testing, and modern engineering practices.
  • Ability to explain technical decisions in terms of the problem solved, trade-offs considered, and value delivered.
  • Strong problem-solving skills and a practical, outcome-oriented approach.
  • Ability to work independently in an environment with changing requirements and limited micromanagement.
  • Proactive communication and confidence collaborating with both technical and non-technical stakeholders.
  • Upper-Intermediate or higher English level.

Nice to have:

  • Experience working in FinTech or another complex product domain.
  • Previous experience in a startup or rapidly scaling product environment.
  • Experience with cloud-based and distributed systems.
  • Experience mentoring engineers or leading technical initiatives.
  • Practical experience with LLMs, coding assistants, AI agents, or engineering workflow automation.

What we value:

  • Ownership: You take responsibility for outcomes, not only assigned tasks.
  • Technical depth: You understand how systems work and can make sound engineering decisions.
  • Product thinking: You consider user needs, business goals, and technical constraints together.
  • Adaptability: You can create clarity and move forward when requirements or priorities change.
  • Strong execution: You can turn complex ideas into working, production-ready solutions.
  • AI fluency: You treat AI as an engineering accelerator while retaining the judgment needed to verify its outputs.

Our Benefits:

  • Professional growth: Individual development plan, mentorship, reimbursement for professional certifications and English lessons, access to professional courses in Corporate Learning Management System.
  • Community: Tech community and knowledge-sharing events, English speaking club, corporate library and book club, volunteering and charity initiatives.
  • Wellbeing: Medical insurance, regular medical check-ups, sport reimbursement, paid vacation and sick leave, mental health support and events.
  • Work environment: Fully-equipped offices, top-notch equipment, flexible work format, activities both in-office and online, Y-bucks and access to the Yalantis store.

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