Middle Full Stack Engineer (Frontend Focus)

Posted Yesterday
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Hiring Remotely in São Paulo, BRA
In-Office or Remote
Mid level
Software
The Role
Design and implement scalable distributed systems, develop APIs, optimize performance, and collaborate with teams to improve processes. Requires 4 years of experience in software development with Java and React.
Summary Generated by Built In
Company Description

Are you a Middle Full Stack Engineer passionate about building high-performance, scalable systems? Join our team at Sigma Software, where we create cutting-edge solutions for a leading online marketplace in the pet products domain.

This is a Senior-level opportunity to work on a high-load, distributed platform that connects millions of pet owners with suppliers worldwide. The role offers flexibility in work format — remote, onsite, or hybrid — to suit your lifestyle.

At Sigma Software, we value innovation, quality, and teamwork. You will be part of a collaborative environment with access to challenging projects, modern technologies, and professional growth opportunities.

CUSTOMER

Our client is a leading online marketplace specializing in pet products. The platform connects pet owners with suppliers offering food, accessories, and healthcare products. Known for its intuitive interface and strong logistics network, the company is committed to enhancing the pet care experience through technology.

PROJECT

We are developing a high-performance, scalable customer-related platform capable of processing substantial data volumes with low latency and fault tolerance. The solution leverages Java, Spring, AWS services, and React to deliver a reliable and engaging user experience for pet owners and suppliers.

Key Technologies: Java, Spring, AWS, React, Linux/Unix, relational & NoSQL databases

Job Description

  • Design, develop, and implement large-scale distributed systems capable of handling high data volumes
  • Build scalable, low-latency, and fault-tolerant solutions
  • Develop APIs and event-driven architectures to meet system requirements
  • Implement unit, API, regression, and performance testing strategies
  • Work with React for frontend development
  • Optimize solutions for scalability, reliability, and high performance
  • Collaborate with cross-functional teams to resolve production incidents quickly
  • Participate in code reviews and contribute to continuous improvement of development processes

Qualifications

  • At least 4 years of experience in software development with Java and object-oriented programming
  • Strong understanding of OOP principles, design patterns, algorithms, and data structures
  • Experience in building multi-tier web applications and REST APIs
  • Experience with frontend frameworks such as React
  • Hands-on experience in Linux/Unix environments
  • Practical knowledge of cloud platforms (AWS, Google Cloud, or Azure)
  • Familiarity with relational and NoSQL databases (HBase, Cassandra, MongoDB, Redshift)
  • Bachelor’s or Master’s degree in Computer Science, Engineering, or related field

WILL BE A PLUS

  • Experience with microservices architecture
  • Knowledge of CI/CD pipelines and DevOps practices
  • Familiarity with containerization tools (Docker, Kubernetes)

Additional Information

PERSONAL PROFILE

  • Strong problem-solving skills and analytical thinking
  • Ability to work effectively in a team and communicate clearly
  • Passion for building high-quality, scalable software solutions

Skills Required

  • At least 4 years of experience in software development with Java and object-oriented programming
  • Strong understanding of OOP principles, design patterns, algorithms, and data structures
  • Experience in building multi-tier web applications and REST APIs
  • Experience with frontend frameworks such as React
  • Hands-on experience in Linux/Unix environments
  • Practical knowledge of cloud platforms (AWS, Google Cloud, or Azure)
  • Familiarity with relational and NoSQL databases (HBase, Cassandra, MongoDB, Redshift)
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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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