Senior Back-end Engineer (Accessibility Product House)

Sorry, this job was removed at 12:22 p.m. (CST) on Wednesday, Feb 11, 2026
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Hiring Remotely in Warsaw, Warszawa, Masovian, POL
In-Office or Remote
Software
The Role
Company Description

We’re looking for an experienced Back-end Engineer to join our innovative team. In this role, you’ll be responsible for designing and implementing scalable, distributed Back-end solutions for a SaaS platform. 

Help scale a fast-growing accessibility SaaS platform as a Senior Back-end Engineer using Go, cloud, microservices, and big data tools. 

CUSTOMER

Our client is a rapidly growing technology leader in digital accessibility software that helps enterprises make their web and mobile products accessible to everyone. Its AI-enabled products save developers time and reduce risk via proprietary discovery and analysis algorithms that integrate directly into software development pipelines. 

Job Description

  • Design and implement scalable, distributed Back-end solutions for a SaaS platform 
  • Architect and deliver complex systems focused on accessibility compliance 
  • Plan, execute, and maintain large-scale software delivery pipelines 
  • Monitor system health and optimize performance across services 
  • Research, evaluate, and integrate modern technologies into the Back-end architecture 
  • Troubleshoot issues across various Back-end services and infrastructure 
  • Collaborate on evolving the product’s core architecture to meet performance and scalability requirements 
  • Lead or contribute to hands-on technical architecture and SaaS infrastructure decisions 

Qualifications

  • 5+ years of hands-on Back-end development experience in at least 2 of the following programming languages: Golang (primary), Node.js, Python, Kotlin, or other JVM-based languages 
  • Proficiency with at least one major cloud provider (GCP, AWS, or Azure) 
  • Some experience with Elasticsearch and BigQuery 
  • Proficiency with at least one messaging/streaming system (e.g., Kafka, Flink, Spark, Pub/Sub, or RabbitMQ) 
  • Strong background in microservices architecture, distributed systems, serverless, and high-scalability systems 
  • Familiarity with production monitoring and performance optimization  
  • Familiarity with CI/CD pipelines and deployment processes 
  • At least Upper-Intermediate level of English  

 
WOULD BE A PLUS

  • Familiarity with ClickHouse 
  • Experience in Full Stack and/or Front-end development 

Additional Information

PERSONAL PROFILE

  • Independent, excellent problem solver and passionate about learning new things  
  • Great communicator and team player with a total commitment to providing the best services to all stakeholders 

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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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