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senior

Full Stack Engineer

Reaktivate4.5k–6k USD
format:Remotetype:Contractcompany:Product
reactnode.jsnestjstypescriptgraphqlmysqljavascript
react nativeaws
test task:yes
experience7+ years
domainPropTech
locationKyiv, Ukraine
> full description

Senior Full Stack Engineer (React / Node.js / NestJS)

Why You’ll Enjoy This Role

🚀 Product company — Join a fast-growing Israeli product company building a platform that improves construction quality and safety.

🏗️ Real product impact — Your work will directly influence a product used daily by construction companies in the field.

💡 Engineering ownership — Take part in architectural discussions, influence technical decisions, and help shape the future of the platform—not just implement requirements.

🤖 AI-friendly engineering culture — We encourage engineers to leverage AI tools and automation to improve development workflows, increase engineering efficiency, and build smarter products.

⚙️ Modern technology stack — Work with React, Node.js, NestJS, GraphQL, TypeScript, and modern engineering practices.

📈 Growing business — Join a company that is rapidly expanding into the US market with strong investment backing.

About the Project

We are looking for a Senior Full Stack Engineer with 7+ years of commercial experience to join our engineering team.

Our client is a leading Israeli product company in the construction quality and safety industry. Their web and mobile platform helps construction companies improve quality control, safety, and field operations.

You’ll join a mature engineering team where you’ll have the opportunity to contribute not only through coding but also by influencing architecture, engineering standards, and long-term technical decisions.

The company is experiencing rapid growth and is actively expanding into the US market, creating exciting technical and business challenges.

Tech Stack

Frontend

React, React Native, MobX

Backend

Node.js, NestJS, GraphQL

Database

MySQL

Languages

JavaScript, TypeScript

Nice to Have

AWS

AI-based development and automation

Team

1 VP R&D, 3 Team Leads, 1 Tech Lead, 4 Product Owners, 1 UX Designer, 14 Full Stack Engineers, 5 QA Engineers, 2 DevOps Engineers, Sales & Support Team

About the Role

As a Senior Full Stack Developer, you will play a key role in both product development and technical leadership.

We are looking for someone who goes beyond implementing requirements — someone who is comfortable making architectural decisions, influencing technical direction, challenging existing approaches, and driving engineering excellence.

You’ll work on both new product features and technical debt, with priorities evolving alongside the product roadmap.

Responsibilities

  • Design, build, and maintain scalable full-stack applications.
  • Participate in architecture and technical decision-making.
  • Own features from design through production.
  • Collaborate with Team Leads on task breakdown and estimation.
  • Write clean, maintainable, and well-tested code.
  • Review code and maintain engineering standards.
  • Mentor teammates and share technical knowledge.
  • Improve application performance and reliability.
  • Identify technical risks and proactively propose improvements.
  • Work closely with Product, Design, QA, and Engineering teams.
  • Balance product development with technical debt reduction.

Required Skills

Must Have

  • 7+ years of commercial software development experience.
  • Strong expertise with React.
  • Strong backend experience with Node.js and NestJS.
  • Excellent knowledge of JavaScript and TypeScript.
  • Experience architecting and building full-stack applications end-to-end.
  • Solid understanding of software architecture and design principles.
  • Experience with GraphQL.
  • Experience with MySQL or other relational databases.
  • Strong debugging and performance optimization skills.
  • Experience writing clean, maintainable, scalable code.
  • Comfortable owning technical decisions rather than simply implementing tasks.

Nice to Have

  • React Native experience.
  • AWS experience.
  • Experience designing AI-powered workflows and automation.
  • AI orchestration, agentic pipelines, CI/CD automation, automated testing or triage.
  • Experience architecting systems around AI capabilities.

What We’re Looking For

Technical mindset

  • Strong architectural thinking across the entire stack.
  • Ability to challenge technical decisions and improve existing solutions.
  • Passion for software craftsmanship and engineering excellence.

Communication & Ownership

  • Strong communication skills with both technical and non-technical stakeholders.
  • Proactive approach to identifying issues and proposing solutions.
  • Ownership mentality — from idea to production.
  • Willingness to mentor and support teammates.

Quality

  • High attention to detail.
  • Thorough testing and documentation.
  • Focus on edge cases and long-term maintainability.
  • Commitment to delivering reliable, bug-free software.

What We Offer

  • Transparent and straightforward engineering culture.
  • Strong focus on software craftsmanship.
  • Self-employment (B2B/FOP) contract.
  • Flexible work environment built on trust and ownership.
  • 10 working months per year and 2 months of paid time off (up to 2–3 consecutive weeks).
  • Office available for co-working when needed.
  • 25–75% reimbursement for professional education and self-development.

Recruitment Process

1. HR Interview (~1 hour)

Meet our HR Manager to discuss your experience, expectations, and learn more about the company.

2. Home Assignment (~1.5—4 hours)

Complete a practical task to demonstrate your technical skills. Every candidate receives detailed feedback.

3. Technical Interview + Live Coding (~1—1.5 hours)

Review your solution and solve practical coding tasks together with our engineers.

4. VP R&D Interview + Customer HR Interview (~30 minutes)

Final discussions focused on technical vision, culture fit, and alignment with our customer.

Why Join Us?

We’re looking for someone who doesn’t just close tickets but wants to influence the product, shape technical decisions, and make a real impact on both the engineering team and the business.

If that sounds like you, we’d love to hear from you.

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