Senior Full Stack Engineer

13 hours ago

Belgrade, Central Serbia Friendly karijere Full time €40,000 - €70,000 per year

Friendly client empowers hoteliers to build smarter digital relationships through the industry's first data-native Marketing CRM. Their solution centralizes guest data from fragmented systems to build unified 360° profiles, enabling hotels to run hyper-personalized marketing campaigns, increase direct bookings, and drive guest loyalty — all through a platform purpose-built for the AI era.

Role Overview

  • Senior full stack engineer who pairs systems thinking with hands-on delivery; report to the CTO and partner closely with product, design, and data teams.
  • Own features from idea to production across data ingestion, backend services, web experience, and DevOps automation.
  • Raise the technical bar through architecture input, code review, tooling improvements, and mentoring peers.

What You'll Do

  • Shape product functionality with leadership, translating growth and retention goals into resilient technical and product roadmaps.
  • Build polished, accessible customer journeys to create a seamless user experience. Be able to lead the "front end" aspect of engineering at Familiar.
  • Design and ship backend services in our NestJS + Fastify API, including data pipelines feeding our unified hotel profile and marketing automation engine.
  • Safeguard quality through automated tests (Jest unit, Playwright e2e), observability, and iterative refactors that keep the monorepo healthy.

Tech Environment

  • TypeScript-first monorepo with pnpm, Node 20+, Turborepo orchestration, Biome linting/formatting, and GitHub Actions quality gates.
  • Frontend: 15, React 18, Storybook-driven component development, Playwright e2e coverage.
  • Backend: NestJS + Fastify, background jobs for property data ingestion, Jest coverage per package.
  • Infra & Data: Terraform-managed cloud footprint, interactive scripts for seeding realistic hotel data, emphasis on secure integrations (e.g., PMS providers like Mews).

What We're Looking For

  • 7+ years building product-focused web platforms with modern TypeScript/Node and React, ideally in data-rich or multi-tenant domains.
  • Proven experience shipping to production in a fast-paced startup: balancing speed, reliability, and thoughtful technical debt paydown.
  • Architectural instincts across API design, event/data pipelines, and front-end state management; comfortable with trade-offs in distributed systems.
  • Strong testing philosophy (unit, integration, e2e) and familiarity with CI/CD automation in monorepos.
  • Ability to mentor engineers, influence product direction with data, and communicate clearly with stakeholders across time zones.
  • Bonus: hospitality tech, marketing automation, or analytics platform experience; Terraform/AWS familiarity.

Employment type:
B2B contract, with a gross monthly rate of
€5,000–€7,000.
If you thrive on ownership, architecture, and building products that blend data and design we'd love to hear from you.

  • Senior Full-Stack Engineer

    4 days ago

    Belgrade, Central Serbia ⚡️ staffi Full time 50,000 - 120,000 per year

    Staffi is hiring aSenior Full Stack Engineer for ArtWorkoutArtWorkoutis a mobile app that teaches users pencil drawing and helps to build creativity with fun. With over 1 million monthly active users, 2000+ lessons, and a hybrid monetization model (subscription + ads), we're scaling quickly. Having our first product historically on iOS, we recently launched...

  • Full Stack Engineer

    2 days ago

    Belgrade, Central Serbia CODETIQ Full time €35,000 - €60,000 per year

    Who we areCODETIQ is a software development company committed to delivering products and services through innovation, authentic engineering culture, and continuous knowledge development. We provide reliable and forward-thinking IT solutions with a strong focus on the renewables and sustainable energy sector.About the roleWe are looking for a Full Stack...

  • Senior Full Stack JavaScript Engineer

    4 days ago

    Belgrade, Central Serbia Passion Full time €90,000 - €120,000 per year

    Build the Future - Power Full Stack Experiences (and explore AI along the way)Do you…..dream in code{JS} speak fluent JavaScripttinker with AI projects just for fun?At , we empower creators to launch impactful mobile apps that change lives. We're on a mission to build game-changing experiences, and we need a Senior Full Stack JavaScript Engineer who can...

  • Senior Full Stack JavaScript Engineer

    4 days ago

    Belgrade, Central Serbia Passion Full time €30,000 - €60,000 per year

    Build the Future - Power Full Stack Experiences (and explore AI along the way)Do you…..dream in code{JS} speak fluent JavaScripttinker with AI projects just for fun?At , we empower creators to launch impactful mobile apps that change lives. We're on a mission to build game-changing experiences, and we need a Senior Full Stack JavaScript Engineer who can...

  • Senior Software Engineer, Full Stack

    2 weeks ago

    Belgrade, Central Serbia Scribe Full time €30,000 - €60,000 per year

    About UsScribe is where exceptional people come to do the best work of their careers. More than 94% of the Fortune 500 use Scribe to document and scale how work gets done. Since our founding in 2019, we've grown to over 5 million users across 600,000 businesses.We've raised $55M in funding from top-tier investors and are proud to be recognized as a Forbes...

  • Senior Software Engineer, Full Stack

    2 days ago

    Belgrade, Central Serbia Scribe Full time €90,000 - €120,000 per year

    About usScribe is where exceptional people come to do the best work of their careers. More than 94% of the Fortune 500 use Scribe to document and scale how work gets done. Since our founding in 2019, we've grown to over 5 million users across 600,000 businesses.We've raised $55M in funding from top-tier investors and are proud to be recognized as a Forbes...

  • Full-Stack Developer

    6 days ago

    Belgrade, Central Serbia HC Solutions Full time €30,000 - €60,000 per year

    For our partners in Serbia (position can be onsite, hybrid or remote), we are looking for Full-Stack Developer.Requirements:6+ years of professional programming experienceStrong proficiency in JavaScript and TypeScript3+ years of hands-on experience developing server-side applications with 3+ years of experience building front-end applications (Angular...

  • Full Stack Developer

    1 week ago

    Belgrade, Central Serbia Manpower Serbia Full time €60,000 - €80,000 per year

    On behalf of our client, Nutanix, Manpower Serbia is seeking motivated candidates for theFull Stack Developerrole.Job description:You will be part of the full-stack web development team responsible for architecting, designing, developing, and maintaining server-side and E2E web applications for SaaS Engineering.Full-stack development with MERN stack. ( i.e....

  • Full Stack Developer

    6 days ago

    Belgrade, Central Serbia AMD Full time €25,000 - €50,000 per year

    WHAT YOU DO AT AMD CHANGES EVERYTHINGAt AMD, our mission is to build great products that accelerate next-generation computing experiences—from AI and data centers, to PCs, gaming and embedded systems. Grounded in a culture of innovation and collaboration, we believe real progress comes from bold ideas, human ingenuity and a shared passion to create...

  • Senior Full-Stack Developer

    6 days ago

    Belgrade, Central Serbia Gamdom Full time €40,000 - €60,000 per year

    About the RoleWe're looking for a talented and driven Full-Stack Developer to join our dynamic team. You'll play a key role in building and maintaining our web application, which relies on live data and real-time functionality. The ideal candidate is strong in backend development while being comfortable with modern frontend technologies.Key...