Senior Golang Software Engineer (Data & Infrastructure)

Wakacje.pl; Gdańsk; Hybrid; PLN 240,000 - 420,000; Full time

Benefits offered by this job

Remote work

Office locations in Gdańsk/Warsaw/Wroc

Career development

Job summary

Wakacje.pl is looking for a Senior Golang Software Engineer (Data & Infrastructure) to join the Supply Nexus team. The role blends hands-on coding with research on data structures and processing techniques, aiming to unify data feeds and scale the booking engine.

Expect roughly half the time coding or reviewing, and half researching data architectures. The position offers a hybrid work model with quarterly in-office collaboration in Poland.

Qualifications

• 6+ years as a software engineer, including 3–4+ years with Go.
• Experience processing large volumes of data at scale.
• Strong SQL and database design for relational and NoSQL databases.
• Experience with distributed systems and API design (REST/gRPC).

Responsibilities

• Split time roughly 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 with focus on availability.
• Process very large files and structure data into terabyte-scale databases.
• 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 entities.

Skills

Go

SQL

Databases

Distributed systems

REST API

gRPC

CI/CD

Collaboration

Problem solving

Tools

Redis

Kibana

Grafana

Job description

Invia x Travelplanet.pl x Wakacje.pl is one of the largest travel groups in Europe. Every year we help more than 6 million people plan their trips. Behind that sit teams in IT, Product, Data, Marketing, HR, Finance, Sales and Customer Experience, who build the tools and services those travelers use. Whichever team you join, your work shows up in how people plan and experience their holidays.

Your next stop:

Join the team behind Supply Nexus, our group-level booking engine and supply platform. This role leans more toward data, infrastructure, and architecture than pure coding — roughly half your time is hands‑on coding and code review, the other half is research and analysis on data structures and how best to process them in code.

Senior Golang Software Engineer (Data & Infrastructure)

What lies ahead on your journey:

• 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, with a strong focus on availability
• Process very large files (hundreds of GB) and structure the data into databases at terabyte scale
• Design indexes for the fastest possible 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

What to pack in your suitcase:

• 6+ years as a software engineer, including 3/4+ years with Go
• 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
• Strong, practical SQL
• Experience with distributed systems and multiple architecture types
• Solid data structures knowledge
• REST API and gRPC experience
• Strong collaboration and problem‑solving skills
• CI/CD fundamentals and full software delivery lifecycle experience
• Comfortable navigating legacy codebases

Your extra baggage of experience:

• Redis (or similar)
• Kibana, Grafana

What you will find on board:

• A remote working model, with a commitment to work from the office at least once a quarter
• Opportunities for professional development aligned with current business needs and your individual career goals,
• A benefits cafeteria platform – we do not decide what siuts for you, you can choose from life insurance, a sports card, and lunch and shopping vouchers,
• Cooperation in international environment,
• Access to Audioteka and Pilot WP, helping you balance personal development with moments of relaxation,
• An openness to innovation and AI-powered tools that support our daily work and help us achieve even better results,
• Discounts on our products for you, your family, and friends,
• Comfortable offices in convenient locations (Gdańsk – Alchemia, Warsaw – Business Garden, Wrocław – Legnicka Business Garden), along with a friendly and informal atmosphere that encourages collaboration,
• Option to join International educational trips, so you can see the destinations and hotels from our portfolio for yourself,
• A culture built on trust, open communication, feedback, and appreciation (because the best journeys begin with a great team),
• Team where #Explore #Engage #Enjoy build our travel mindset.