Senior Platform Engineer

Welcome Pickups; Polska; On-site; PLN 140,000 - 210,000; Full time

Job summary

Welcome Pickups is seeking a Senior Platform Engineer to keep our platform reliable, fast, scalable and secure so travellers, drivers and partners can rely on our services daily.

You will make key architecture and infrastructure decisions, set the standards everyone builds to, and own the technical roadmap together with the Core team's Product Manager. This hands-on role spans across product teams to accelerate growth safely.

Qualifications

• 8+ years of software engineering experience, with strong backend and systems experience.
• BS/MS degree in Computer Science

Responsibilities

• Define and track reliability targets (SLAs/SLOs) for core flows (bookings, ride matching and payments).
• Set up and run the incident process and on-call, and reduce recovery times.
• Improve monitoring and alerting across the platform (New Relic, Rollbar).
• Lead architecture decisions for scaling backend systems and services.
• Find and fix performance bottlenecks across the application, background jobs and database.
• Tune slow queries and indexes, plan data growth and archiving, manage replication, backups and restore drills, change large tables without downtime.
• Define and enforce security best practices: access control, secrets management, and the security of build/release pipeline.
• Prepare the platform for compliance: PCI, GDPR, SOC 2 / ISO 27001.
• Improve internal tooling, CI/CD and deployment workflows for faster, safer shipping.
• Keep the technical backlog organized in Jira and plan with Product Manager.
• Write technical docs, runbooks and development plans, and break them into Jira tickets.

Skills

8+ years of software engineering

backend systems

Education

BS/MS in Computer Science

Tools

Ruby on Rails

Sidekiq

RabbitMQ

PostgreSQL

PostGIS

Elasticsearch

Redis

Azure

AWS S3

Google Cloud

Cloud66

Cloudflare

CircleCI

Docker

New Relic

Rollbar

Mixpanel

Job description

About us

Founded in 2015 in Athens, Greece, Welcome redefines the way people travel by going above and beyond the commoditized transfer service and being the first company to deliver a complete, personalised, in-destination travel experience. From the moment a traveler arrives at a new destination, until their return journey home, Welcome accommodates all their travel needs, including transfers, sightseeing trips, and local information, in the easiest, friendliest, and most personalised way possible. Welcome's drivers are experts in the area and share their local know-how to make travellers feel at home wherever they are. The company has also introduced contactless rides, thorough cleaning protocols, and protective equipment to make every journey safe. Being a travel tech startup, Welcome continues to grow and scale its operations and is quickly becoming a global category leader for in-destination travel services. One of the highest-rated global transportation companies with a rating of 4.9/5 stars. Expanded from 200 destinations last year to 350, achieving our ambitious 2024 growth target. Over 4,000 travel partners including 2,500 hotels, numerous vacation rentals, and travel agents, adding 50+ new ones every month. Over 2.5 million happy travellers every year.

The Team

We are a group of vibrant, diverse people who love travelling and never settle on quality. Each one of us didn't join Welcome by chance and believes deeply in what Welcome is trying to achieve, so we work relentlessly to make that happen. We challenge common logic, focus on design, put simplicity and usability first, and create memorable experiences. We keep learning and exploring better ways to serve our community and grow personally and professionally in our respective fields. We stay humble along the way, with a "pay it forward" mentality, but with big and bold goals.

Job Description

As a Senior Platform Engineer at Welcome Pickups , you will keep the platform behind our product reliable, fast, scalable and secure, so travellers, drivers and partners can count on our services every day. Much of what we do runs in the background: matching rides to drivers, pricing, notifications, partner syncs and payouts. If the platform slows down or stops, rides don't get assigned and travellers end up waiting at arrivals. This is a hands-on role that works across all our product teams. You will make key architecture and infrastructure decisions, set the standards everyone builds to, and own the technical roadmap together with the Product Manager of the Core team. The role is about helping product teams move fast without breaking things, not slowing them down.

What you'll work with

• A large Ruby on Rails application, with Sidekiq and RabbitMQ
• A large, fast-growing PostgreSQL/PostGIS database, plus Elasticsearch and Redis
• Azure as our main cloud, with AWS S3 and Google Cloud Cloud66, Cloudflare, CircleCI and Docker
• New Relic and Rollbar for monitoring, and Mixpanel for product analytics
• 30+ external services, including Checkout.com, Twilio, Braze and hotel booking systems

Responsibilities

• Reliability & Uptime: Define and track reliability targets (SLAs/SLOs) for our core flows: bookings, ride matching and payments.
• Set up and run the incident process and on-call, and reduce recovery times.
• Improve monitoring and alerting across the platform (New Relic, Rollbar).
• Performance, Scalability & Data: Lead architecture decisions for scaling our backend systems and services.
• Find and fix performance bottlenecks across the application, background jobs and database.
• Improve the performance of our large, fast-growing PostgreSQL database: tune slow queries and indexes, plan data growth and archiving, manage replication, backups and restore drills, change large tables without downtime.
• Make sure the platform handles peak season and partner growth smoothly.
• Infrastructure, Security & Compliance: Define and evolve our infrastructure strategy on Azure, and balance performance, reliability and cost.
• Define and enforce security best practices: access control, secrets management, and the security of our build and release pipeline.
• Prepare the platform for compliance: payment-data rules (PCI), GDPR, and over time SOC 2 / ISO 27001.
• Developer Experience: Improve internal tooling, CI/CD and deployment workflows so engineers can ship faster and safer.
• Technical Roadmap & Collaboration: Keep the backlog of technical work (upgrades, technical debt, performance, security) organised and ranked in Jira, and prioritise it together with the Product Manager.
• Write technical docs, runbooks and development plans, and break them into Jira tickets with clear requirements.
• Participate in team ceremonies (grooming, planning, kick-off meetings, retrospectives & demos).

Qualifications

8+ years of software engineering experience, with strong backend and systems experience. BS/MS degree in Computer Science or a