Senior Full Stack Engineer

Posted 3 Days Ago
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Hiring Remotely in Warsaw, Warszawa, Masovian, POL
In-Office or Remote
Senior level
Software
The Role
The Senior Full Stack Engineer will develop user-friendly web applications, integrate backend data, optimize performance, and ensure quality and security best practices.
Summary Generated by Built In
Company Description

Are you ready to take your engineering skills to the next level? We are looking for a Senior Full Stack Engineer to join our team and help build innovative, data-rich web applications for global clients.

This role offers the opportunity to work on cutting-edge solutions using modern technologies, contributing to products that shape industries and empower millions of users worldwide.

We at Sigma Software value expertise, creativity, and collaboration. You will be part of a culture that supports professional growth, offers competitive benefits, and encourages innovation.

CUSTOMER

Our Customer is a global content and information company with over a century of history, recognized for shaping the future of media and data. With a strong focus on innovation, they deliver trusted experiences and tools that inform, inspire, and empower millions worldwide. Operating across multiple continents, they are known for their commitment to quality, accuracy, and cutting-edge technology.

Job Description

  • Develop responsive, user-friendly interfaces using React and Vite
  • Create interactive charts and data visualizations with D3.js or similar libraries
  • Integrate backend data via REST and GraphQL APIs
  • Collaborate closely with data engineers to incorporate complex datasets into the product
  • Optimize application performance, scalability, and reliability
  • Implement best practices for security, CI/CD, testing, and code quality
  • Work with product and design teams to translate business requirements into technical solutions
  • Take ownership of features from ideation to deployment and monitoring in production
  • Stay up to date with emerging technologies and contribute to technical decision-making

Qualifications

  • 5+ years of professional experience with JavaScript/TypeScript across frontend and backend
  • Strong experience with React and Vite for scalable frontend applications
  • Solid hands-on experience with Node.js, NestJS, and REST API development
  • Experience with data layer technologies, including PostgreSQL on AWS RDS and BigQuery
  • Practical knowledge of D3.js or similar libraries for interactive data visualization
  • Exposure to modern AI-powered backend solutions, including Agentic AI
  • Strong knowledge of HTML, CSS, and JavaScript fundamentals
  • Upper-Intermediate spoken and written English

WILL BE A PLUS:

  • Experience with Model Context Protocol (MCP)
  • Familiarity with workflow automation tools such as n8n

Top Skills

Aws Rds
BigQuery
D3.Js
GraphQL
JavaScript
Nestjs
Node.js
Postgres
React
Rest
Typescript
Vite
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The Company
New York, New York
1,516 Employees

What We Do

Sigma Software Group, an award-winning and trusted IT partner, has been serving customers for over 21 years, providing comprehensive IT solutions to various businesses, ranging from startups to established software product houses. As one of Europe's substantial IT consultancies, it brings together a dedicated workforce of over 2,100 professionals in 40 offices across 19 countries. With a diverse client base, including more than 300 enterprises, including Fortune 500 stalwarts, Sigma Software Group is a preferred choice for developing solutions that help businesses create cutting-edge products while meeting their unique needs. Sigma Software Group operates as a dynamic ecosystem of tech companies, offering 25 ready-to-implement innovative products and 40+ value-added services. Furthermore, Sigma Software Group is committed to fostering innovation through initiatives such as the Sigma Software Labs business incubator, Sigma Software University, the SID Venture Partners VC Fund, UA Tech Network, Techosystem, the European Business Association, and other collaborative efforts. Since 2015, Sigma Software Group has consistently earned recognition on the IAOP's prestigious World's Top 100 Outsourcing list. The company's accomplishments have also been acknowledged by prominent global media outlets such as Forbes, CNBC, The Times, and Reuters

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