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Middle Full Stack Developer (React+Java)
New
Java

Middle Full Stack Developer (React+Java)

Poland (Remote)
Type of work
Full-time
Experience
Mid
Employment Type
B2B, Permanent
Operating mode
Remote
Sigma Software

Sigma Software

Sigma Software is a global software development company that enables enterprises, startups, and product houses to meet their technology needs through end-to-end delivery. We have been working since 2002, from all over the world.

Tech stack

    English

    B2

    Java

    regular

    React

    regular

    Cloud

    regular

    AWS

    regular

    GCP

    regular

    Azure

    regular

    PostreSQL

    regular

    MongoDB

    regular

    Cassandra

    regular

Job description

Online interview
Friendly offer

Customer

It is an international technology company that specializes in developing high-load platforms for data processing and analytics. Its core product helps businesses manage large volumes of data, build models, and gain actionable insights. The company operates globally and serves clients primarily in the marketing and advertising sectors, and focuses on modern technologies, microservices architecture, and cloud-based solutions.


Project

The project focuses on working with audiences and targeting from the advertisers’ side (such as marketing agencies and similar structures). It is an independent project within a larger AdTech platform.


Requirements

  • 4 years of experience in software development using Java

  • Experience in building multitier web applications and creating REST APIs

  • Good understanding of OOP principles, design patterns, algorithms, and data structures

  • Hands on experience with React

  • Familiarity with cloud platforms (AWS, Google Cloud, or Azure)

  • Hands on experience with Linux/Unix environments

  • Experience with relational and/or NoSQL databases (e.g., PostgreSQL, MongoDB, Cassandra)

  • Ability to write clean, maintainable, and well-tested code

  • Eagerness to learn and contribute to engineering best practices

  • At least an Upper-Intermediate level of English


Responsibilities

  • Develop and maintain scalable web applications using a microservices architecture

  • Participate in designing and implementing RESTful APIs

  • Support ingestion, processing, and analytics pipelines for large datasets

  • Take part in proof-of-concept (POC) initiatives to assess the viability of emerging tools and practices

  • Contribute to Front-end development using React

  • Ensure code quality through testing, code reviews, and adherence to best practices

  • Work with cloud-based infrastructure and tools to deploy and monitor applications

  • Collaborate with cross-functional teams including Data Analysts and Scientists

  • Support continuous improvement by suggesting tools, frameworks, and workflow enhancements

Undisclosed Salary

B2B, Permanent

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Informujemy, że administratorem danych jest Sigma Software sp. z o.o. z siedzibą w Warszawie, ul. Chmielna 134 (dalej ja... more