Senior Front-End Developer

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

Ukraine only

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Design, develop, and maintain scalable front-end applications using ReactJS and GraphQL
Collaborate with UX/UI designers and backend developers to deliver high-quality features
Implement responsive, user-friendly interfaces across devices and browsers
Ensure application performance, security, and scalability
Conduct code reviews and share best practices with the team
Debug and resolve issues efficiently
Contribute to continuous improvement of development processes and tools

5+ years of professional front-end development experience using ReactJS
Strong proficiency in JavaScript (ES6+), TypeScript, HTML5, CSS3
Expert knowledge of ReactJS, React Hooks, Context API, and Redux (Redux-Saga optional)
Experience with Next.js and GraphQL (Apollo Client or similar)
Experience with RESTful APIs and third-party integrations
Familiarity with performance optimization and debugging techniques
Knowledge of component-based architecture and state management patterns
Upper-Intermediate level of spoken and written English

WILL BE A PLUS

Experience with Playwright or other automated testing frameworks
Familiarity with CI/CD pipelines and DevOps practices
Experience with Google Cloud Platform

PERSONAL PROFILE

Proactive and detail-oriented
Strong communication skills
Team player with collaborative mindset
Problem-solving attitude
Adaptable to changing requirements and priorities

Are you passionate about creating seamless, high-performance web applications? We are looking for a Senior Front-End Developer to join our team and work on an exciting e-commerce project in the pet industry. This role offers the opportunity to shape user experiences for a platform with a broad audience and strong online presence.

You will be part of a collaborative, agile-driven environment at Sigma Software, where innovation and quality go hand in hand.

Why join us? You’ll be working on a high-impact project where your ideas and technical decisions will directly influence product success and user experience.

CUSTOMER
Our Customer is a leading online marketplace specializing in pet products, recognized for its extensive catalog and strong digital presence. The company caters to a wide audience of pet owners, offering food, accessories, and healthcare products. With a focus on quality and customer satisfaction, it has become a trusted destination for pet lovers worldwide.

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About the job

Apply before

May 03, 2026

Posted on

Mar 04, 2026

Job type

Full Time

Experience level

Senior

Experience

5 years minimum

Location requirements

Ukraine

Hiring timezones

Ukraine +/- 0 hours

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!

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