Resume Keywords for Software Engineers

Most software engineering roles at companies with 50+ employees use an ATS to filter applications before a human recruiter reviews them. The ATS scans your resume for keywords that match the job description — skills, tools, frameworks, and technologies — and ranks or filters applications based on that match.

A resume that does not include the specific keywords the ATS is looking for will not be seen by a recruiter, regardless of your actual experience. This is why two engineers with similar experience can have dramatically different response rates — one is keyword-optimised, the other is not.

The solution is not to stuff keywords randomly. It is to ensure your resume includes the correct terminology for your actual skills — using the same language the job description uses.

Use the resume keywords checker to instantly scan any job description and identify which keywords you are missing.

These keywords appear across most software engineering job descriptions regardless of specialisation:

Fundamental concepts:
- Object-Oriented Programming (OOP)
- Data Structures and Algorithms
- System Design
- Scalability
- RESTful APIs / REST API
- Microservices architecture
- Agile methodology / Scrum
- Test-Driven Development (TDD)
- Code review
- Version control / Git / GitHub

Languages (include those you actually use):
- Python, Java, JavaScript, TypeScript, Go (Golang), Rust, C++, C#, Ruby, Kotlin, Swift, Scala

Databases:
- SQL, PostgreSQL, MySQL, MongoDB, Redis, Elasticsearch, DynamoDB, Cassandra

Cloud platforms:
- AWS (Amazon Web Services), Google Cloud Platform (GCP), Microsoft Azure
- Specific services: EC2, S3, Lambda, RDS, Kubernetes, Docker

Testing:
- Unit testing, Integration testing, End-to-end testing
- Jest, PyTest, JUnit, Selenium, Cypress

If you are applying for backend or server-side engineering roles:

Core backend keywords:
- Server-side development
- API design and development
- Database optimisation / query optimisation
- Caching strategies (Redis, Memcached)
- Message queues (Kafka, RabbitMQ, SQS)
- Authentication and authorisation (OAuth, JWT)
- High availability, fault tolerance
- Load balancing
- CI/CD pipelines (Jenkins, GitHub Actions, CircleCI)
- Infrastructure as code (Terraform, Ansible)

Performance keywords:
- Latency optimisation, throughput, concurrency
- Distributed systems
- Event-driven architecture
- Service mesh (Istio)

For frontend, UI engineering, or full-stack roles:

Frontend core keywords:
- React.js, Angular, Vue.js, Next.js, Svelte
- HTML5, CSS3, Sass/SCSS, Tailwind CSS
- Responsive design, mobile-first design
- Web accessibility (WCAG, ARIA)
- JavaScript/TypeScript proficiency
- State management (Redux, Zustand, MobX)
- Component architecture
- Web performance optimisation (Core Web Vitals, Lighthouse)
- Browser compatibility

Full-stack additional keywords:
- Node.js, Express.js, FastAPI, Django, Flask, Rails, Spring Boot
- GraphQL, REST API integration
- WebSockets, real-time communication
- Webpack, Vite, Babel
- Cross-functional collaboration

Rule 1: Use the exact phrase from the job description. "Kubernetes" and "K8s" are not treated as synonyms by all ATS systems. If the job says "Kubernetes," use "Kubernetes." Include the abbreviation in parentheses if relevant: "Kubernetes (K8s)."

Rule 2: Keywords belong in context. Place them in achievement bullets that describe what you actually built or accomplished:
- Wrong: "Skills: Python, AWS, Kubernetes, Docker, Terraform"
- Right: "Redesigned deployment pipeline using Docker and Kubernetes on AWS, reducing deployment time from 45 minutes to 8 minutes"

Rule 3: Match the seniority language. Senior roles use words like "architected," "designed," "led," and "owned." Junior roles use "implemented," "developed," "built," and "contributed to." Mismatched seniority language is a soft signal reviewers notice.

Rule 4: Scan each job description individually. A Google job description and a startup job description for the same "senior engineer" role may have very different keyword priorities. Use the resume keywords checker to identify the specific gaps for each application.