Kitrum boosts IT solutions for your business — fast, smart, and nimble. MVP for several weeks, improvements and complex features for months, scaling for a year, and support with maintenance — forever. We work with top experts — over 70% of the team are seniors, and more than 10% are mid-level professionals.
4 лютого 2026

Principal Golang Engineer

Київ, Варшава (Польща), віддалено

We are looking for a Principal Golang Engineer to take ownership of complex product features across the stack. You will work with world’s leading platform for creating and operating real-time 3D (RT3D) content.

Must-have for the position

  • 4+ years of experience with Go (7+ years of experience in software development).
  • Good commercial experience building high-traffic web services in Go.
  • Good understanding of good experience writing unit tests.
  • Knowledge and understanding of distributed, highly available, and scalable cloud-based systems.
  • Knowledge and understanding of microservice architecture and patterns.
  • Experience with NoSQL databases — MongoDB preferred.
  • Strong communication skills and high English proficiency.
  • Experience working with GCP, Firebase and Docker.

Will be a strong plus

  • Infrastructure-as-code tools, such as Terraform.
  • Front-end background (e.g. HTML, JavaScript, CSS, React, Next.js).

Responsibilities

  • Take ownership of the existing large scale monolithic application (in house build CRM: Golang backend with SSR + React frontend).
  • Facilitate MongoDB version upgrade.
  • Create plan for reducing technical debt in the system and execute on it.
  • Lead development effort of two other backend engineers who will be part of your team.
  • Collaborate with team lead and product owner on prioritization and development strategy of new features.

About the project

Client is the world’s leading platform for creating and operating real-time 3D (RT3D) content. Its platform provides a comprehensive set of software solutions to create, run and monetize interactive, real-time 2D and 3D content for mobile phones, tablets, PCs, consoles, and augmented and virtual reality devices. You will be working with a team responsible for learning a portal, which hosts tutorials and a knowledge base that helps users learn the software.

Some WOW facts about our client:
— 5B downloads per month of apps built with the product;
— 70% of the top 1,000 mobile games were made with the product;
— 50%+ of games across mobile, PC, and console were made with the product;
— 3.9B monthly active users who consumed content created or operated with product solutions;
— 20+ different platforms run product creations.

  • Tech Stack: Golang, MongoDB, GCP, Docker; Firebase

Working conditions

  • Work schedule: Flexible, with required overlap with Greenwich time.
  • Fully Remote: This role offers the flexibility to work from anywhere.

Interview process

  • HR Interview: Initial discussion with our recruiter;
  • KITRUM’s Technical Interview
  • Client Interviews:
    — Interview with Team Lead;
    — Small coding task at home;
    — Review of the task — meeting.

Why you’ll love working here

  • Competitive Pay: We offer a compensation that reflects your skills and experience;
  • Remote Flexibility: Work from anywhere — our team is distributed across the globe;
  • Professional Growth: Access to continuous learning opportunities, including paid courses, certifications, mentorship;
  • Work-Life Balance: 30 days of paid vacation and 6 paid sick days per year, plus flexible hours;
  • Inclusive Culture: We embrace diversity and foster a culture of trust, transparency, and mutual respect;
  • Cool Perks: Join our virtual team events, get a budget for your home office setup, and enjoy access to exclusive content and tools.

📲 If this vacancy isn’t for you but could be perfect for a friend/colleague, share it through this link and earn a reward for your referral!

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