Junior Full-Stack Engineer Resume Sample

Carlos Mendez

carlos@mendez.dev

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(303) 555-0290

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linkedin.com/in/carlos-mendez-fullstack

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github.com/carlosmendez

Junior Full-Stack Engineer

Junior Full-Stack Engineer with 2 years building end-to-end web applications. Proficient in React, Node.js, PostgreSQL, and REST APIs. Delivered 8 full-stack features serving 80K+ users, reduced API response times by 35%, and implemented authentication system handling 10K+ monthly logins. Passionate about learning both frontend and backend technologies.

WORK EXPERIENCE

Junior Full-Stack Engineer

Aug 2023 – Present

SaaS Startup

Full-Stack Feature Development: Built 8 end-to-end features including React frontend, Node.js/Express APIs, and PostgreSQL database schema serving 80K+ users with 99.5% uptime
API Performance Optimization: Reduced average API response time from 450ms to 290ms (35% faster) by optimizing database queries, adding Redis caching, and implementing connection pooling
Authentication System: Implemented JWT authentication system with refresh tokens, role-based access control, and password reset flow handling 10K+ monthly logins

Full-Stack Engineering Intern

Jun 2022 – Jul 2023

Digital Products Agency

Web Application Development: Developed 3 full-stack web apps using React, Node.js, and MongoDB, implementing CRUD operations, user authentication, and responsive UI
API Development: Built RESTful APIs with Express.js for client projects, implementing validation, error handling, and API documentation with Swagger
Database & Deployment: Designed database schemas, wrote migrations, deployed apps to AWS using Docker and EC2, set up CI/CD pipelines with GitHub Actions

SKILLS & COMPETENCIES

CERTIFICATIONS

Full Stack Web Development Certificate

May 2024

freeCodeCamp

EDUCATION

Bachelor of Science in Computer Science

2019-2023

University of Colorado Boulder

Boulder, Colorado

Software Engineering
Web Development

Tools to build your Junior Full-Stack Engineer resume

Copy and adapt these proven examples to create a resume that stands out.

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Resume Headlines

Use these attention-grabbing headlines to make a strong first impression.

Junior Full-Stack Engineer | React & Node.js | Building End-to-End Features for 80K+ Users

Full-Stack Developer | Frontend & Backend | 35% API Performance Improvement

Junior Full-Stack Engineer | React, Node.js, PostgreSQL | Authentication Expert

Full-Stack Engineer | Building Complete Web Apps | Modern Tech Stack

Junior Full-Stack Engineer | End-to-End Development | React, Node.js, AWS

Full-Stack Developer | Learning & Growing | Frontend, Backend, DevOps

💡 Tip: Choose a headline that reflects your unique value proposition and matches the job requirements.

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Power Bullet Points

Adapt these achievement-focused bullets to showcase your impact.

Full-Stack Feature Development

• Built 8 end-to-end features from React UI to Node.js APIs to PostgreSQL database serving 80K+ users, implementing complete user flows from design to deployment

• Developed user management dashboard with React frontend, Express backend, and PostgreSQL database, enabling admins to manage 10K+ user accounts

• Created real-time notification system using React, Node.js, WebSockets, and Redis pub/sub delivering 50K+ daily notifications with sub-second latency

• Implemented search functionality with React frontend, Node.js backend, and Elasticsearch integration returning results in <200ms for 80K+ users

Backend & API Development

• Built 15+ RESTful API endpoints with Node.js/Express handling 500K+ monthly requests, implementing validation, error handling, and comprehensive API documentation with Swagger

• Reduced average API response time from 450ms to 290ms (35% faster) by optimizing database queries, adding Redis caching, and implementing connection pooling

• Developed authentication system with JWT tokens, refresh token rotation, role-based access control (RBAC), and password reset flow handling 10K+ monthly logins

• Implemented rate limiting, request throttling, and API versioning protecting endpoints from abuse and enabling backward-compatible API evolution

Database & Data Management

• Designed PostgreSQL database schemas with proper normalization, indexes, and foreign key constraints supporting 80K+ users and 5M+ records

• Wrote database migrations managing schema evolution across 20+ releases, ensuring zero-downtime deployments and data integrity

• Optimized slow database queries using EXPLAIN ANALYZE, adding indexes and rewriting queries reducing query time from 2.1s to 380ms

• Implemented Redis caching layer for frequently accessed data reducing database load by 40% and improving response times by 35%

Deployment & DevOps

• Deployed full-stack applications to AWS using Docker containers, EC2 instances, and RDS databases, implementing environment-specific configurations

• Set up CI/CD pipelines with GitHub Actions automating testing, building, and deployment reducing deployment time from 2 hours to 15 minutes

• Configured Nginx reverse proxy, SSL certificates, and environment variables enabling secure production deployments with HTTPS

• Implemented application monitoring with logging (Winston) and error tracking (Sentry) catching 30+ bugs before user impact

💡 Tip: Replace generic terms with specific metrics, technologies, and outcomes from your experience.

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Resume Writing Tips for Junior Full-Stack Engineers

Emphasize End-to-End Ownership

Junior full-stack means owning complete features. Highlight: built frontend AND backend AND database, deployed to production, handled entire user flows. Avoid "helped with" or "assisted"—show you own the full stack, even if with guidance.

Balance Frontend and Backend Equally

Don't overemphasize one side. Include: React components (frontend), API endpoints (backend), database design (data), deployment (DevOps). Show you're truly full-stack, not frontend-leaning or backend-heavy. Balance demonstrates versatility.

Quantify Across the Entire Stack

Include metrics for each layer: users served (frontend), API response times (backend), database records managed (data), deployment frequency (DevOps). Quantify holistically—8 features, 80K users, 35% API improvements, 10K auth logins.

Show Learning and Growth Mindset

Junior roles emphasize learning. Include: technologies learned, teams collaborated with (design, product, DevOps), knowledge gaps closed. Show progression from intern to junior engineer, from guided to independent work.

List 12-15 Skills Across the Stack

Cover frontend (React, CSS), backend (Node.js, Express), databases (PostgreSQL, Redis), deployment (Docker, AWS), and tools (Git, testing). Show T-shaped skills: broad fundamentals across the stack with depth in 2-3 areas.

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Essential Skills & Keywords

Include these skills to optimize your resume for ATS systems and recruiter searches.

Frontend

React & React Hooks JavaScript (ES6+) TypeScript HTML5 & CSS3 Responsive Design State Management

Backend

Node.js & Express RESTful API Design JWT Authentication API Documentation (Swagger) Error Handling Middleware

Databases & Caching

PostgreSQL MongoDB Redis Database Design SQL Queries Migrations

DevOps & Deployment

Docker Basics AWS (EC2, S3, RDS) CI/CD (GitHub Actions) Git & GitHub Linux Basics Nginx

Testing & Tools

Jest Testing (Unit & Integration) Postman VS Code npm/yarn ESLint

Best Practices

Agile/Scrum Code Reviews Version Control API Security Documentation Debugging

💡 Tip: Naturally integrate 8-12 of these keywords throughout your resume, especially in your summary and experience sections.

Why this resume works

Role-Specific Strengths

End-to-end feature development: Built complete features from UI to database—demonstrates full-stack capability beyond siloed work
Frontend and backend balance: React components AND Node.js APIs—shows versatility across the stack
Performance and quality awareness: 35% API improvements, authentication implementation—quality mindset beyond basic features
Learning mindset and collaboration: Worked with designers and DevOps, learned deployment—shows growth orientation

✓ ATS-Friendly Elements

Entry-level keywords: "full-stack," "React," "Node.js," "REST API," "PostgreSQL," "authentication"
Action verbs: Built, Developed, Implemented, Optimized, Collaborated
Technologies: React, Node.js, Express, PostgreSQL, Git, Docker
Practices: Agile, code reviews, CI/CD basics, testing
Quantified contributions: features built, users served, performance improvements

✓ Human-Readable Design

Summary emphasizes end-to-end ownership: frontend to backend to database
Metrics scaled appropriately: 8 features, 80K users, 10K logins, 35% improvements
Experience shows progression from intern to junior engineer
Skills balance frontend (React), backend (Node.js), and infrastructure (Docker)
Recent CS degree or bootcamp signals entry level

💡 Key Takeaways

Junior full-stack engineers should demonstrate both frontend and backend capabilities
Quantify end-to-end work: complete features, users served, API performance, auth metrics
Show technology breadth: React, Node.js, databases, deployment, version control
Highlight learning: worked across teams, learned new tech, expanded skill set
Balance matters: don't overemphasize one side of the stack—show versatility

📈 Career Progression in Full-Stack Engineering

See how Full-Stack Engineering roles evolve from feature development to system ownership.

💻 Junior Engineer (Current) ⚙️ Full-Stack Engineer → 🚀 Senior/Staff Engineer →

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Junior Full-Stack Engineer Resume Example