Senior Full Stack Engineer

Sigma Software Group is a global IT consulting company that provides top-quality custom software development, graphic design, testing, and support services to a wide range of industries.

Sigma Software

Employee count: 1001-5000

Poland only

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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

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

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.

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About the job

Apply before

Jun 03, 2026

Posted on

Apr 04, 2026

Job type

Full Time

Experience level

Senior

Experience

5 years minimum

Location requirements

Poland

Hiring timezones

Poland +/- 0 hours

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About Sigma Software

Learn more about Sigma Software and their company culture.

View company profile

At the heart of Sigma Software Group lies a culture deeply rooted in Scandinavian values, emphasizing mutual respect, transparency, and a minimal hierarchy. This foundation fosters an environment where every voice is heard and valued, empowering our team of over 2000 IT experts to innovate and excel. Since our inception in 2002, our mission has been to build long-term, synergistic relationships not just with our clients, but with our employees as well. We believe that the key to delivering top-quality, value-adding IT services is a team that feels supported, inspired, and driven by a shared passion for finding better solutions. Our culture is one of perseverance, coupled with exceptional client management and strong engineering principles, which has been the cornerstone of our success and sustained growth on the global stage.

Our commitment extends beyond delivering cutting-edge software solutions. We are dedicated to nurturing the growth of the IT ecosystem through our educational platform, Sigma Software University, and fostering the next generation of tech innovators via our corporate venture fund, Sigma Software Labs. This holistic approach reflects our core belief in the power of collaboration and knowledge sharing. We actively encourage our specialists to pursue professional development, offering a continuous education program and a multitude of knowledge-sharing events. This dedication to growth, combined with a flexible work-life balance and a strong sense of community, defines who we are. We are more than just a technology partner; we are a collective of passionate individuals working together to create a better tomorrow, driven by a constant quest for innovation and a commitment to making a positive impact on the world.

Tech stack

Learn about the tools and technologies that Sigma Software uses to build, market, and sell its products.

View tech stack

JavaScript

iOS

Protobuf

Blockchain

Google Cloud Platform

Docker

Sigma Software employees can create an account to update this tech stack.

Employee benefits

Learn about the employee benefits and perks provided at Sigma Software.

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Discount program

Access to a discount program.

Flexible schedule

Organize your work schedule in a way that suits you.

Remote or office work

You can choose to work from one of our outstanding offices or remotely.

Legal support

24/7 call center for legal advice and urgent lawyer assistance in case of an incident.

View Sigma Software's employee benefits

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Please let Sigma Software know you found this job on Himalayas. This helps us grow!

Apply now