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Senior Back-end Engineer (Accessibility Product House)

Sigma Software

Office

Warsaw, Masovian Voivodeship, Poland

Full Time

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.

CUSTOMER

Our client is a rapidly growing technology leader in digital accessibility software, helping enterprises make their web and mobile offerings accessible to everyone.  

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 scale requirements 
  • Lead or contribute to hands-on technical architecture and SaaS infrastructure decisions

Qualifications

  • 8+ years of hands-on experience with Golang or Node.js 
  • Solid expertise in cloud platforms, preferably GCP or AWS 
  • Production-grade experience with ClickHouse 
  • Proficiency with at least one messaging and/or streaming system (e.g., Kafka, Flink, Spark, Pub/Sub, or RabbitMQ) 
  • Strong background in microservices architecture, distributed systems, serverless architecture, and highly scalable systems 
  • Familiarity with production monitoring and performance optimization  
  • At least an Upper-Intermediate level of English  

WOULD BE A PLUS:

  • Experience with Python or Kotlin
  • Experience with Kubernetes
  • Familiarity with ElasticSearch or BigQuery

Senior Back-end Engineer (Accessibility Product House)

Office

Warsaw, Masovian Voivodeship, Poland

Full Time

August 7, 2025

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Sigma Software

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