Why keywords matter more for software roles
Technical job descriptions are usually written by engineers, not recruiters, and they enumerate specific requirements in a way that other disciplines do not. A job posting for a senior backend engineer might list ten distinct technologies by name. ATS systems at companies that handle high application volumes use these exact strings to filter candidates, and recruiters who manually review applications often scan for them first.
The implication: if you use "SQL databases" but the posting says "PostgreSQL," you may not match a filtered search even though the experience is the same. Use the exact terminology from the posting for the skills you have.
Languages and core technologies
Include only the languages and tools you can discuss fluently in an interview. Use the same capitalisation and abbreviation as the posting when it matters (e.g., TypeScript vs. JavaScript, Go vs. Golang).
Frontend frameworks and libraries
Backend frameworks and runtimes
Infrastructure, cloud, and DevOps
These terms matter especially for roles that include "full-stack," "platform," or "infrastructure" in the title. Include only what you have deployed or maintained in production.
Databases and storage
Practices and methodologies
These appear in requirements sections, not skills lists, but should show up naturally in your bullet descriptions.
Action verbs by seniority
The verbs you use in bullets signal seniority to both ATS filters and human reviewers. Match the scope of your verbs to the scope of your actual contribution.
- Early-career: implemented, contributed to, built, shipped, fixed, integrated, maintained, tested, documented
- Mid-level: owned, designed, refactored, led, automated, optimized, migrated, reduced, improved, shipped end-to-end
- Senior: architected, defined, drove adoption of, mentored, established patterns for, reviewed, set technical direction for, reduced team-wide X by Y
- Staff / Principal: aligned cross-team, set standards for, introduced, authored RFC for, deprecated, responsible for reliability of
Before and after: how to use keywords in context
Keywords alone do not make a strong resume. They need to appear inside bullets that describe specific outcomes.
Before"Worked on backend systems to make them faster and more reliable"
After"Migrated API layer from synchronous REST handlers to async event-driven architecture using Kafka and Go, reducing p95 latency from 340ms to 95ms under peak load"
The second version contains the exact tools (Kafka, Go), the approach (async event-driven architecture), and a measurable outcome — all of which a recruiter searching for "Kafka" or "Go" will now find.