Andreas Schoinas

Software Engineering Manager — GetYourGuide (02/2025 – present)

GetYourGuide: global travel marketplace for tours, activities, attractions.

• Strategic partner launch (Trip.com): Delivered on time during constrained resourcing; built a reusable feeds integration now adopted by ~6 large partners and requested by ~12 more within months.
• Localization platform reboot: Centralized translation/i18n flows and migrated providers → ~50% lower ops cost and ~5–10% quality gains beyond top-4 languages; cleared legacy flows and exceeded Q targets.
• Associate hiring pipeline: Co‑designed an Associate SWE track; hired 2 high‑impact Associates quickly; pipeline later enabled ~10+ org‑wide hires.
• On‑call revamp: Added SLO housekeeping/tech‑debt to rotations → ~90% alert‑noise reduction and ~75% tech‑debt burn‑down in a month.

Rotations: Partner Tech (02–06/2025), Localization Tech (07–09/2025), Marketing Platform (10/2025–present).

Senior Software Engineer — GetYourGuide (03/2023 – 01/2025)

Modernized the Partner Tech estate from legacy PHP to resilient Java/Spring Boot services.

• Core domain library: Unified data access, authorization, and business rules; enabled consistent REST, GraphQL, and Kafka snapshot producers.
• Public affiliate API migration: Moved inventory/availability/booking APIs to Spring Boot with zero production incidents and no partner disruption.

Software Engineering Fellow — CERN (02/2020 – 02/2023)

IT‑CS‑CT (Communication Tools): network data backbone and interfaces (from field technicians to DHCP and cluster/VM provisioning).

• Framework modernization: Rebuilt legacy backbone into Spring Boot for maintainability and reliability.
• PL/SQL → Java migration: Led business‑logic migration to a Java service cluster; personally moved TCP/IP address‑management domain with zero disruptions.
• Systems: CSDB (network infrastructure DB), LANDB (internet access portal), CernPhone (VoIP).

Senior Software Consultant — Cognity S.A. (11/2019 – 02/2020)

Cosmote/Payzy (Fintech).

• Designed and implemented backend infrastructure (Java, Spring, Kafka, Kubernetes) for the Payzy app.

Database Administrator — Hellenic Army (04/2019 – 11/2019)

Mission‑critical information systems (PL/SQL, MySQL, Java, PHP). Details restricted.

Software Consultant — Cognity S.A. (11/2015 – 04/2019)

Enterprise projects primarily for Cosmote and affiliates.

• Re‑designed a legacy bank payments solution to Spring Boot; still processing hundreds of thousands of EUR daily.
• Built PayPal gateways for Cosmote, Germanos, Wind—handling thousands of EUR daily to date.
• Migrated a legacy mobile backend (Java 1.5 on 16‑node WebLogic) to Spring Boot microservices → rollout/scale‑up time reduced by ~95%.
• Delivered high‑volume client portals managing traffic and costs across thousands of contracts.