We are currently seeking a motivated and self-driven Principal Backend Developer to join our dynamic team of professionals.

As a Principal Developer, you will play a key role in analyzing and resolving various business challenges within the technology realm.

Your responsibilities will include designing, implementing, conducting unit tests, and documenting software systems on a daily basis.

If you are intrigued by this opportunity, we warmly invite you to become a part of our team!


Our client is a UK-based company whose mission is to create a better internet. We build an analytics platform that connects marketers to publishers to ensure further investment in great content creators while allowing both parties to grow efficiencies in their business.


Along with the Customer, we are building the next generation of artificial intelligence technology to help keep the web running. We are all used to a free internet with a diverse set of services and content, but without a sustainable way to monetize the work of creators, we will be left with only a few portals run by large corporations.

There are a lot of reasons to join our project. Here are just a few of them:

• AWS infrastructure

• ML

• Big Data

• Active development stage

• Working closely with the CTO – ability to make a great impact on a project

  • 8+ years of software engineering experience
  • Excellent knowledge of JavaScript, TypeScript
  • Solid experience with Vue.js, Node.js, and the related ecosystem
  • Strong knowledge of algorithms and data structures
  • Experience with designing, implementing, and shipping rich web applications
  • Expertise in documentation and Software Development Lifecycle and ALM Tools
  • Strong estimation skills, ability to come up with solutions, pros/cons
  • Strong knowledge of functional programming concepts and other programming paradigms
  • Openness to working and collaborating in a multidisciplinary team


  • Working experience with Python
  • Experience with AWS

  • Implement portions of software following given classes/components design and using your primary tech stack
  • Ensure quality, maintainability, and conformance of software to best practices
  • Produce clean code
  • Participate in requirements clarification sessions, collect inputs and requirements of assigned tasks
  • Proactively review own code with peers to ensure its quality
  • Participate in estimation and planning sessions
  • Play supervisory, advisory, and coaching roles for one or several Juniors specialists, ensuring their assigned tasks delivery thanks to guidance and peer reviews provided
  • Develop technical project documentation and user documentation
  • Participate in project and team meetings, provide relevant contributions and information
  • Participate in technical interviews of software developer specialists and assess candidates’ capabilities against job requirements

Sigma Software

Sigma Software


Sigma Software is a multinational company with over 21 years of experience providing our customers with best-in-class solutions. We are an IT consulting and software product company with development offices in Sweden, the USA, Canada, Ukraine, Latin America, Poland, Portugal, Hungary, Bulgaria, and the Czech Republic. 

All open vacancies are available both remotely and in the offices.

We deliver the smartest solutions to our customers in the areas of government, telecommunications, advertising, automotive, gaming, and others. We are a global player with more than 2000 specialists working from 40 offices in 19 countries. 

Taking high demand for quality, minimal hierarchy, freedom of decision-making, attention to every opinion, flexibility, and dedication to every project and every customer make us different.

Today, Sigma Software is a whole ecosystem that includes its own business incubator, educational platform, business association of companies, its own product line, and patented innovative solutions.