Senior Golang Software Engineer (Data & Infrastructure)

Invia CEE x Travelplanet.pl x Wakacje.pl is one of the largest travel groups in Europe, assisting more than 6 million people annually to plan their trips. The company includes teams in IT, Product, Data, Marketing, HR, Finance, Sales, and Customer Experience that build the tools and services used by travelers.

• 6+ years as a software engineer, including 3/4+ years with Go / Golang
• Proven experience processing large volumes of data at scale
• Hands-on experience with relational and non-relational databases handling large data volumes
• Experience processing very large files and structuring data into terabyte-scale databases
• Experience designing indexes for fast data access
• Strong, practical SQL skills
• Experience with distributed systems and multiple architecture types
• Solid data structures knowledge
• Experience with REST API and gRPC
• English proficiency at B2+ level
• Strong collaboration and problem-solving skills
• CI/CD fundamentals and full software delivery lifecycle experience
• Comfortable navigating legacy codebases

Nice to have:

• Experience with Kubernetes
• Experience with Redis (or similar)
• Experience with Kibana, Grafana

• Split time ~50/50 between coding/code review and research on data structures and processing approaches
• Maintain and enhance Supply Nexus, including the booking engine
• Integrate data and systems from across the business into one unified platform
• Lead the redesign of a legacy service onto a modern platform — from architecture through delivery
• Import and maintain tour operator data feeds, focusing on availability
• Process very large files (hundreds of GB) and structure the data into databases at terabyte scale
• Design indexes for fast data access
• Handle basic DevOps: CI/CD, deployment, cloud resource optimization
• Improve platform performance, scalability, reliability, and observability
• Build and improve API integrations across all entities