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Core Competencies
Role fitCore Competencies
Use this summary to align your resume positioning with the role.
Demonstrates expertise in building and maintaining scalable billing systems, integrating with APIs, and ensuring system reliability. Proficient in PHP, OOP, and design patterns, with a strong focus on architectural thinking and collaboration across teams.
Highest-signal resume keywords
Strong PHP ProgrammingREST API DevelopmentSQL Database ManagementEvent-Driven SystemsUnit and Integration Testing
ATS Keywords
Tailor your resumeApplicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills
PHPOOPDesign PatternsREST APIsSQLQueuesEvent-Driven SystemsUnit TestingIntegration TestingLegacy Code Improvement
Soft Skills
Clear CommunicationTechnical Decision DefenseArchitectural ThinkingCollaboration
Industry Keywords
Billing SystemsAsynchronous SystemsCode ReviewProduction SystemIntegration Maintenance
Tech Stack
Tools & technologiesPHPSQL
About the role
Key responsibilities & impact- Build and maintain billing systems that scale for millions of customers
- Own a part of billing end to end, from business need through design, release, and monitoring
- Integrate with third-party and internal services through APIs, webhooks, and events
- Maintain integrations when external systems change
- Collaborate regularly with other teams and support their billing-related questions
- Review code and influence engineering practices
- Keep the system up to date
- Revisit and improve legacy code and processes
- Ensure correct pricing, including taxes, customer location, and sales logic
- Maintain reliability in asynchronous systems where events can arrive late or multiple times
Requirements
What you’ll need- Ability to explain complex problems and trade-offs clearly in writing and conversation
- Ability to defend technical decisions when challenged
- Architectural thinking about domains and boundaries
- Strong PHP with solid command of OOP and design patterns
- Hands-on experience with REST APIs, SQL, queues, and event-driven systems
- Experience writing unit and integration tests
- Experience working on a large production system
- Ideally, experience being on call
Benefits
Comp & perks- Limitless learning opportunities, including access to Reforge and CoachHub
- Global conferences
- Physical and digital libraries
- Feedback culture
- Mentoring through TesoXchange
- Internal mobility opportunities
- Flexible work arrangements from modern offices in Kaunas and Vilnius, home, or anywhere in the world
- Flexible schedule
- Insurance from Day 1
- Gym memberships
- Recharge leave
- Headspace subscriptions
- Regular health checks
- Wellbeing events, sports, arts, and hobby clubs
- Company events including Summerfest, Winterfest, Town Hall, Meet the Client initiatives, team-buildings, and workations
- Access to the Žalgiris Arena VIP Lounge
- Milestone gifts for weddings, new parenthood, and graduations
