Backend Engineer II

Hybrid In Santa Clara, United StatesHybrid

Responsibilities

Design, build, and maintain efficient, reusable, and reliable backend code to support new product features and enhancements.
Develop and integrate RESTful or GraphQL APIs to serve front-end applications and external clients.
Design and optimize database schemas (SQL and NoSQL) to ensure data integrity and query performance at scale.
Collaborate with frontend developers, product managers, and designers to translate
Troubleshoot production issues, identify bottlenecks, and drive performance optimizations across the application stack.
Write comprehensive unit and integration tests to ensure high code quality and system stability. Who you are

Software has entered an era where humans and AI build side by side.
Every day, millions of developers use HackerRank to prove their skills.
experience in server-side software development.
Proficient in at least one modern backend programming language (e.g., Python, Ruby, Go, Java, or Node.js).
Deep understanding of API design principles (REST, GraphQL) and web standards. Strong
experience with relational databases (PostgreSQL, MySQL) and familiarity with NoSQL stores.
Knowledge of distributed systems, caching mechanisms (Redis/Memcached), and asynchronous messaging (Kafka/RabbitMQ).
Familiarity with containerization (Docker) and basic CI/CD workflows. AI fluency
Comfortable using AI-powered coding assistants (e.g., GitHub Copilot, Cursor, Claude Code) as a daily part of your development workflow.
Working familiarity with large language models — you understand what they can and can't do, and can write effective prompts to get useful outputs. •
Experience using AI tools beyond code generation — for planning, writing documentation, drafting test cases, debugging, and code review.
Basic understanding of AI/ML fundamentals: how LLMs work at a high level (tokens, context windows, inference), common model architectures, and the difference between fine-tuning, RAG, and prompt engineering.
You stay current with the rapidly evolving AI tooling landscape and are eager to adopt tools that meaningfully improve your productivity. Even better if you have •