About Roslin

Roslin is a technology company building and operating large-scale mobility and transportation platforms for the US market. Our systems power dispatch operations, driver and passenger applications, billing, automation, and back-office workflows used daily across multiple states.

We build long-term products, not short-term projects. Our platforms operate under real-world load, real operational constraints, and strict reliability expectations.

Why This Role Exists

We are expanding our backend engineering team in Bucharest to strengthen and scale core services written in PHP (Laravel). These services support operational dashboards, mobile applications, billing pipelines, and integrations with external systems.

We’re looking for a PHP Backend Engineer who understands production systems end to end - someone who designs APIs with reliability, performance, and security in mind, and who is comfortable owning backend logic that directly impacts day-to-day operations.

You’ll collaborate closely with frontend, mobile, product, and operations teams to ship backend features that matter.

What You’ll Do

Backend & API Development

• Design and implement REST APIs using PHP 8.x and Laravel
• Build backend features for admin dashboards, mobile apps, and operational workflows
• Handle authentication, authorization, job/shift lifecycles, billing, notifications, and reporting

Reliability & Performance

• Use Redis for caching, queues, and pub/sub
• Design idempotent, retry-safe backend flows
• Ensure data reliability through backups, monitoring, and safe migrations

Data & Background Processing

• Design and optimize MySQL schemas, indexes, and queries
• Implement background jobs using Laravel queues / Horizon
• Monitor async workloads and improve throughput and stability

Ops & Admin Tooling

• Build backend logic for RBAC, audit logs, exports, scheduled jobs, and reporting
• Support recurring operational processes such as billing runs and system maintenance tasks

Code Quality & Security

• Write clean, testable code (unit, integration, API tests)
• Follow secure coding practices (OWASP, PII handling, access control)
• Participate in code reviews and CI workflows

Collaboration

• Work closely with Product, Frontend, Mobile, and Operations
• Help estimate work, break down features, and deliver incrementally
• Improve existing systems - not just build new ones

What You Bring

Experience

• 5+ years building production backend systems in PHP (Laravel)
• Strong hands-on experience with MySQL
• Practical experience using Redis for queues and caching
• Experience building and maintaining REST APIs

Technical Skills

• PHP 8.x, Laravel
• MySQL (schema design, indexing, performance tuning)
• Redis (queues, caching, pub/sub)
• Laravel Horizon or similar queue tooling
• API fundamentals: auth, pagination, versioning
• Testing with PHPUnit / Pest
• Git-based workflows and CI pipelines

Nice to Have

• Experience with Go or interest in polyglot backends
• Push notifications (FCM / APNs)
• AWS exposure
• Docker and containerized development basics
• Familiarity with admin dashboard UX concepts (RBAC, logs, exports)

What Success Looks Like

• APIs are stable, secure, and performant in production
• Background jobs run reliably with clear monitoring and retries
• Admin and ops tools reduce manual work and operational friction
• Backend systems are easy to support, extend, and scale

What We Offer

• Competitive compensation based on experience
• Employment or B2B contract
• On-site / Hybrid work model from Bucharest
• Paid time off
• Training opportunities and corporate trips
• Company-paid AI tools (Claude, GPT-5, etc.)
• Long-term product work with real ownership

Why Roslin

✓ Real backend ownership - not ticket-driven work

✓ Systems at scale - millions of rides, real operational load

✓ AI-native culture - tools are expected, not forbidden

✓ Long-term products - build once, improve continuously