Senior Backend Engineer
Amplify IT
- Virginia, Minnesota, United States
- Virginia, Minnesota, United States
Über
About the Role What we're looking for We're looking for a Backend Engineer (Senior level) specialized in Swift (Server-Side Swift) to lead the evolution of our core API, architect scalable services and ensure our payment infrastructure is fast, secure and resilient. You'll own the backend and have an active voice in technical and product decisions.
Responsibilities
Develop and evolve high-performance APIs using Swift (Vapor/Kitura)
Design scalable, secure, microservices-oriented architectures
Create robust integrations with payment gateways, anti-fraud and external providers
Ensure testability, security, logs and observability (Sentry, OpenTelemetry, Grafana)
Optimize backend performance (concurrency, async/await, memory management)
Implement security best practices (JWT, rate limits, idempotency, webhook signing)
Create CI/CD pipelines (GitHub Actions) and automate tests and deploys
Collaborate with Product to transform requirements into clear, efficient features
Requirements
4+ years of backend experience
Solid experience with Swift server-side (Vapor, Kitura or equivalent)
Proficiency in building REST APIs (authentication, versioning, documentation)
Deep knowledge of concurrency, async/await, performance and memory safety
Experience with relational databases (PostgreSQL, MySQL) and query optimization
Mastery of CI/CD, versioning (Git) and cloud environments
Familiarity with cloud infra (GCP, AWS or similar)
Strong sense of ownership, autonomy and ability to solve complex problems
Nice to Have
Experience with Cloud Run / AWS Lambda
Knowledge of Docker, containers and scalable infra
Experience with payments, reconciliation, chargebacks or fintech in general
Knowledge of Redis, queues and event-driven architectures
Previous experience in fast-paced startups
Currently accepting applications from Brazil only
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Sprachkenntnisse
- English
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