Are you a Senior Full Stack Developer who thrives on building scalable, high-performance systems? Join us at Sigma Software and contribute to a cutting-edge platform for a leading pet products marketplace — a solution designed to serve millions of customers and transform the way pet owners shop online.
In this role, you will be part of a skilled, collaborative team working with modern technologies to create a robust, customer-focused product that stands out in the e-commerce space.
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 marketplace specializing in pet products, known for its extensive catalog and strong online presence. With a commitment to quality and customer satisfaction, the company serves a wide audience of pet owners, offering everything from food and accessories to healthcare products.
Job Description- Design, develop, and implement large-scale distributed systems with scalability, low latency, and fault tolerance
- Implement APIs and event-driven solutions to meet system requirements and enhance functionality
- Create and execute unit, API, regression, and performance tests to ensure system reliability
- Develop modern web interfaces using React
- Optimize solutions for scalability, reliability, and performance
- Collaborate with cross-functional teams to resolve production incidents quickly
- 5+ years of experience in software development with Java
- Experience in building multi-tier web applications and creating REST APIs
- Strong understanding of OOP principles, design patterns, algorithms, and data structures
- Experience with ReactJS for designing maintainable, scalable UI systems
- Familiarity with Spring Framework
- Hands-on experience in Linux/Unix environments
- Practical knowledge of cloud platforms (AWS, Google Cloud, or Azure)
- Familiarity with SQL and NoSQL databases (HBase, Cassandra, MongoDB, Redshift)
- Upper-Intermediate level of English
PERSONAL PROFILE
- Strong problem-solving skills and attention to detail
- Ability to work independently
- Excellent communication and collaboration skills
Top Skills
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








