Senior Engineer, Backend APIs (Java)

TL;DR

Senior Engineer, Backend APIs (Java): Building and optimizing microservice-based API products for reporting and analytics with an accent on API design, data access patterns, and production ownership. Focus on scaling high-throughput, low-latency backend web services, ensuring code quality, and leveraging AI-assisted tools in development.

Location: Hybrid, based in Los Angeles, New York City, or Broomfield (US), with 3 days in-office and 2 days remote.

Salary: $125,000–$155,000

Company

hirify.global is the world's largest independent sell-side advertising platform, enabling publishers to monetize content across all screens and formats.

What you will do

• Design, build, and evolve microservice-based API products for reporting and analytics applications.
• Collaborate with Product, UI, and Data engineers on end-to-end feature delivery.
• Design intuitive and consumable APIs with clear contracts, documentation, and versioning.
• Shape data access patterns, including schemas, query plans, caching, and performance tuning for big data.
• Champion code quality through testing, reviews, design docs, and pragmatic documentation.
• Own services in production, including dashboards, alerting, capacity planning, and reliability improvements.

Requirements

• 5+ years of software engineering experience, including 3+ years with Java.
• Deep understanding of microservice fundamentals and API design at scale.
• Primary development experience in Java for high-throughput, low-latency back-end web services.
• Hands-on experience with Postgres (or other RDBMS) for modeling, migrations, indexing, and query optimization.
• Track record of shipping well-tested, production-grade APIs for UI and direct consumers.
• Proficiency with Git/GitHub and modern team practices.

Nice to have

• Exposure to cloud providers (AWS, GCP, or Azure) and container orchestration (Docker/Kubernetes).
• Familiarity with functional programming concepts.
• Experience with event-driven or streaming architectures.
• Understanding of authN/Z patterns (OAuth2/JWT), rate limiting, and API security.
• Observability tools and practices (metrics, tracing, logs) and load/perf testing.
• Knowledge of Real-Time Bidding (RTB), SSPs, DSPs, and ad delivery systems.

Culture & Benefits

• Comprehensive Healthcare Coverage from Day One.
• Generous Time Off, Holiday Breaks, and Quarterly Wellness Days.
• Equity and Employee Stock Purchase Plan with a 401k Retirement Savings Plan with Employer Match.
• Hybrid schedule (2 remote, 3 in-office) with catered lunches, beverages, and snacks.
• Commitment to employee growth, collaboration, inclusion, and innovation.
• Wellness Coach, Mental Health Support, and Career Development Initiatives.