What we offerVacanciesSenior Software Developer

Senior Software Developer (Web Development)

Poland Remote (Ukraine) Romania Ukraine Engineering React Software Development TypeScript
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Required skills

Next.js / expert
TypeScript / expert
React / expert
CI/CD / strong
Firebase / strong

Are you a talented Senior Software Developer ready to make an impact on high-traffic web platforms? This role offers the opportunity to tackle complex technical challenges, shape product architecture, and deliver solutions used worldwide.

We at Sigma Software are looking for a skilled professional to join our Engineering department in Kyiv, Ukraine, with the flexibility to work remotely. You will collaborate with cross-functional teams, drive innovation, and work with modern technologies.

Why join us? You will be part of a company that values technical excellence, creativity, and continuous improvement, offering diverse projects and opportunities for professional growth.

Customer

Our client is a well-established Ukrainian product company with a strong presence in the global market. Their flagship platform is widely adopted internationally and continues to grow rapidly. Known for delivering high-quality, scalable solutions, the company fosters a culture of innovation and continuous improvement.

Project

The project involves developing and enhancing a high-traffic product website, implementing new features, improving architecture, and enabling rapid experimentation through A/B testing and analytics integrations. You will work closely with product managers and designers to deliver seamless user experiences and scalable solutions.

Requirements

  • 5+ years of experience in web application development
  • Proficiency in Next.js, TypeScript, and React
  • Familiarity with CI/CD pipelines
  • Experience integrating third-party services (e.g., Amplitude, Customer.io)
  • Strong understanding of high-quality architecture principles
  • Business-oriented mindset and creative thinking
  • Ability to balance big-picture thinking with attention to detail
  • Upper-Intermediate English level

WILL BE A PLUS

  • Experience with Firebase
  • Experience with Cypress or other testing frameworks
  • Experience with Material UI or other UI libraries
  • Experience with CI/CD pipelines
  • Prior work with analytics integrations

Personal Profile

  • Proactive problem-solver who thrives in collaborative environments
  • Strong technical expertise combined with a business-oriented mindset
  • Passionate about modern web technologies
  • Able to balance strategic thinking with meticulous attention to detail

Responsibilities

  • Collaborate with cross-functional teams to design, develop, and maintain the product website
  • Implement new features and improvements, ensuring high performance and scalability
  • Manage releases and run A/B experiments to optimize user experience
  • Build systems for rapid iteration of web funnels, including hypothesis testing and analytics
  • Integrate with third-party analytics tools such as Amplitude and Customer.io
  • Participate in architectural discussions and contribute to technical decision-making
  • Mentor junior developers and share best practices within the team
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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