Senior Full-Stack Developer (NXJ-131)

Category

AdTech · Node.js · Python · React.js

Type

Remote

Location

Poland · Romania · Ukraine

We are looking for an exceptional and highly experienced Senior Full-Stack Developer to join the client’s core team. In this role, you will play a key technical part, taking ownership of developing the most mission-critical features from concept to production. You will combine hands-on coding expertise with strategic architectural insight to ensure the systems are robust, scalable, and performant.

Responsibilities

  • Technical Leadership & Execution: Lead the full development lifecycle of core features, maintaining hands-on coding excellence while guiding the technical process
  • System Architecture: Architect and implement complex, scalable, high-performance distributed systems
  • Collaboration: Partner with Product Managers, Designers, and cross-functional teams to turn product visions into actionable technical requirements
  • Continuous Improvement: Promote evolution of development processes, infrastructure, and overall code quality
  • Mentorship: Provide guidance to team members, conduct code reviews, and establish engineering best practices

Requirements

  • Experience: 7+ years of hands-on software development experience
  • Backend Mastery: Minimum 5 years of backend development using Python or Node.js
  • Frontend Expertise: 3+ years with React or similar frameworks (Angular/Vue.js)
  • Architectural Depth: Proven skills in system architecture, design patterns, and distributed system design
  • API Design: Strong expertise in RESTful or GraphQL API design and implementation
  • Soft Skills: Highly independent, ownership-driven mindset, excellent communication and interpersonal abilities

Will be a plus

  • Entrepreneurial Spirit: Experience as a founding team member or early startup employee is a strong plus
  • Cloud Proficiency: Hands-on experience with AWS, GCP, or Azure
  • Data Management: Knowledge of relational and NoSQL databases (PostgreSQL, MongoDB, Redis)
  • DevOps & Infrastructure: Experience with Docker, Kubernetes, and CI/CD automation
  • Education: B.Sc. in Computer Science or Software Engineering, or alumni of an elite military technological unit

What we offer

  • Competitive salary and benefits package
  • Medical insurance
  • Top equipment kit
  • Full Remote
  • Collaborative and innovative work environment
  • Career growth and development opportunities
  • A chance to work with a talented and driven team of professional

About the project

Our client is a fast-growing digital marketing leader helping DTC brands scale globally. Their AI and Big Data platform powers real-time campaign optimization and data-driven insights. Combining full-stack marketing expertise, PPC, creative production, and funnel optimization, they deliver high-impact, ROI-driven campaigns while supporting brand growth.

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