What we offerVacanciesFull Stack Engineer with focus on Back-end

Full Stack Engineer with focus on Back-end

Albania Europe Europe (remote) Poland Romania Engineering Node.js Software Development TypeScript
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Required skills

Node.js / strong
Express.js / strong
MongoDB / good
Firebase Authentication / good
Vue.js / good

Are you passionate about creating impactful web and mobile solutions and excited to work on cutting-edge music technology? We at Sigma Software are looking for a Middle Full Stack Engineer with a strong focus on back-end development to join our team and help shape innovative tools for musicians worldwide.

You can work remotely, onsite in Warsaw, or in a hybrid format — we are flexible to fit your lifestyle. At Sigma Software, you will join a collaborative environment where your expertise will directly influence product performance, usability, and global reach.

Why join us? We offer competitive benefits, a supportive team culture, and the opportunity to work on projects that make a real difference in the music industry.

Customer

Our Customer is a leading innovator in the music technology industry, dedicated to transforming how musicians interact with sheet music. Their portfolio includes advanced Optical Music Recognition systems and cross-platform applications that enhance music performance and accessibility worldwide.

Project

The project focuses on developing and enhancing a comprehensive sheet music technology ecosystem. This includes cross-platform mobile applications, single-page web applications, and a proprietary Sheet Music Core engine integrated with Optical Music Recognition technology. The goal is to deliver accurate, high-performance, and user-friendly solutions for musicians globally.

Requirements

  • 3–5 years of experience as a Full Stack Engineer, with strong back-end focus
  • Proven system design skills for scalable back-end systems
  • Solid understanding of SQL/NoSQL databases and data structures
  • Experience with RESTful APIs and integrations
  • Proficiency in Node.js, Express.js, MongoDB, Firebase (auth)
  • Familiarity with Agile/Scrum methodologies
  • Ability to work independently and master complex business logic
  • Excellent communication skills and experience working with US-based Customers

WILL BE A PLUS

  • Mobile app development experience (cross-platform) with CapacitorJS or similar
  • Experience with Vue.js and TypeScript
  • Knowledge of Apple Developer and Google Play Developer platforms

Personal Profile

  • Independent and proactive problem solver
  • Passionate about learning new technologies
  • Strong communication skills and team-oriented mindset
  • Committed to delivering high-quality solutions to stakeholders
  • Experience in the music domain

Responsibilities

  • Design, develop, and maintain cross-platform mobile and web applications within the sheet music ecosystem
  • Enhance the proprietary Sheet Music Core engine and OMR system to improve accuracy and performance
  • Collaborate closely with product managers, designers, and engineers to deliver robust, scalable solutions
  • Ensure code quality through reviews, documentation, and adherence to Agile best practices
  • Integrate back-end services with front-end applications, ensuring seamless user experiences
  • Troubleshoot and resolve technical issues across platforms
Meet your team!

WHY US

  • Diversity of Domains & Businesses
  • Variety of technology
  • Health & Legal support
  • Active professional community
  • Continuous education and growing
  • Flexible schedule
  • Remote work
  • Outstanding offices (if you choose it)
  • Sports and community activities

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