WeZoom logoWeZoom.app

Backend Developer resume example

Backend roles get evaluated on whether the system stays up and stays fast under load, so your resume should read like an incident-free uptime report. State the language and framework, then the scale: requests per second, query latency, or data volume the service handled.

James Okafor

Backend Developer

Denver, CO james.okafor@email.com +1 (720) 555-0198 linkedin.com/in/jamesokafor github.com/jokafor-dev

Summary

Senior Backend Developer with 7+ years of experience engineering high-throughput microservices and distributed data architectures in Java, Spring Boot, and PostgreSQL. Proven expert in database performance tuning, asynchronous messaging, Kafka event-driven architectures, and resilient cloud deployments, scaling enterprise platforms to 3,000 qps while consistently holding p99 latency under 200ms across high-volume production traffic.

Experience

Senior Backend Developer
Fernbridge Systems · Denver, CO
Jan 2022 — Present
  • Migrated a legacy monolithic billing module to an event-driven microservice using Apache Kafka, boosting sustained throughput from 900 to 3,000 qps.
  • Optimized the order-history query engine with composite PostgreSQL indexes and Redis caching, cutting p99 latency from 1,100ms to 180ms.
  • Standardized contract testing across 5 microservices, reducing production integration defects from 4 per quarter to 0 over 9 months.
Backend Engineer
Northgate Software · Denver, CO
Sep 2018 — Dec 2021
  • Built an OAuth2 authentication microservice processing 400k logins daily, decreasing customer authentication support tickets by 35%.
  • Optimized a nightly batch financial reconciliation workflow from 6 hours to 45 minutes by parallelizing processing with Kafka consumer groups.
  • Containerized 8 enterprise services with Docker and Kubernetes, reducing developer environment provisioning time from 2 days to 1 hour.

Skills

Java · Spring Boot · PostgreSQL · Apache Kafka · Redis · Docker · Kubernetes · gRPC · REST APIs · SQL Optimization · Distributed Systems · System Design

Education

Colorado State University
B.S. Computer Science
2014 — 2018

Backend Developer · Engineering Minimal template · single-column, ATS-safe.

ATS keywords for a Backend Developer resume

Applicant tracking systems match your resume against the job description's vocabulary. Mirror the terms below that are true of you — ideally with a metric attached.

JavaSpring BootNode.jsPostgreSQLMySQLApache KafkaRedisDockerKubernetesMicroservicesgRPCREST APIsRabbitMQSQL OptimizationOAuth2CI/CD

What recruiters look for

  • The primary language and framework matched exactly to the job posting.
  • Database and query-optimization evidence — index tuning, N+1 fixes, migration work.
  • Scale numbers: throughput, concurrent users, data volume, uptime percentage.
  • Messaging or event-driven architecture experience (Kafka, RabbitMQ, SQS) for distributed systems roles.
  • API design ownership — versioning, auth, rate limiting — not just endpoint implementation.

Before & after: one bullet

Weak

Responsible for backend services and database management.

Strong

Redesigned the order-service schema and added composite indexes, cutting average query time from 480ms to 65ms across 2M daily orders.

Common mistakes to avoid

  • Listing 'built REST APIs' with no throughput, latency or adoption number attached.
  • Omitting database technology entirely, which is often the first ATS filter for backend roles.
  • No mention of testing or code review process, which reads as solo-cowboy coding to reviewers.
  • Padding with frontend or DevOps keywords the role doesn't call for, diluting the backend signal.