Strong Middle/Senior Full Stack Engineer

Posted 7 Days Ago
Be an Early Applicant
Hiring Remotely in Warsaw, Warszawa, Masovian, POL
In-Office or Remote
Senior level
Software
The Role
Design, implement, and maintain backend APIs and microservices; resolve escalations; drive end-to-end feature delivery; refactor for scalability and performance; own R&D roadmap initiatives; participate in code reviews and promote engineering best practices.
Summary Generated by Built In
Company Description

Are you passionate about building secure, high-performance systems that protect valuable digital assets? We are looking for a Strong Middle / Senior Software Engineer to join our team and contribute to cutting-edge cybersecurity solutions. 

We at Sigma Software partner with industry leaders to deliver advanced protection against digital threats, ensuring safe environments for individuals, organizations, and communities. Joining us means working alongside top professionals, gaining access to professional development opportunities, and enjoying a supportive culture.

Why join us? Competitive compensation, flexible work arrangements, and the chance to work on meaningful projects that make a difference in the digital space.

CUSTOMER
Our Customer is a leading provider of comprehensive cybersecurity solutions, operating across multiple sectors to safeguard against a wide range of digital threats. Their expertise includes proactive threat neutralization, real-time operational governance, and advanced anomaly detection, ensuring secure environments for high-value assets.

PROJECT
The project delivers autonomous governance and real-time operational protocols to protect sensitive information assets. It offers comprehensive visibility into dynamic execution patterns and proactively neutralizes systemic anomalies to ensure total environment stability. The solution integrates backend APIs, microservices, and advanced reporting to support high-performance, security-focused workflows.

Job Description

  • Investigate and resolve client escalations beyond first-line support capabilities
  • Drive end-to-end delivery of new features and enhancements, from requirements gathering to implementation and stakeholder feedback
  • Develop and maintain backend APIs and microservices supporting reporting, integrations, and core product workflows
  • Work within a mature codebase, refactoring and improving existing components to enhance scalability, maintainability, and performance
  • Act as R&D Owner for roadmap initiatives, leading grooming, requirements definition, implementation, and review
  • Participate in code reviews, share knowledge, and promote engineering best practices across the team

Qualifications

  • 5+ years of commercial software engineering experience with JavaScript, TypeScript, React, Node.js, and Go
  • Hands-on experience with SQL and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB)
  • Experience with cloud platforms AWS and/or GCP, including deployment and infrastructure management
  • Ability to work independently and take ownership of complex initiatives
  • Strong problem-solving skills with the ability to translate complex requirements into clear technical solutions
  • Proactive mindset for identifying and implementing product/process improvements
  • Advanced written and spoken English 

WILL BE A PLUS

  • Experience with cybersecurity, fraud prevention, detection, or other security-focused products
  • Experience with large-scale, high-traffic, or performance-sensitive systems

Additional Information

PERSONAL PROFILE

  • Self-driven engineer with strong ownership mentality
  • Capable of leading initiatives from concept to delivery
  • Enjoys tackling complex challenges and improving systems
  • Committed to contributing to team-wide best practices

Skills Required

  • 5+ years commercial software engineering experience with JavaScript, TypeScript, React, Node.js, and Go
  • Hands-on experience with SQL and NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB)
  • Experience with cloud platforms AWS and/or GCP, including deployment and infrastructure management
  • Ability to work independently and take ownership of complex initiatives
  • Strong problem-solving skills and ability to translate complex requirements into technical solutions
  • Proactive mindset for identifying and implementing product/process improvements
  • Advanced written and spoken English
  • Experience with cybersecurity, fraud prevention, detection, or other security-focused products
  • Experience with large-scale, high-traffic, or performance-sensitive systems
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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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