Mid-Level Full Stack Web Developer Resume Example

Last Updated: December 24, 2025

Mid-level full stack web developers get hired when they prove end-to-end feature ownership, not by listing tickets completed without technical context.

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Who this is for

This resume is for full stack developers who own end-to-end features and mentor junior peers, but aren't yet responsible for defining technical roadmaps or department-wide engineering strategy.

Hiring bar
  • End-to-end ownership of significant product features
  • Evidence of performance optimization across both frontend and backend
  • Contribution to team growth through mentorship or architectural improvements
Resume structure
  • Skills categorized by technology stack and infrastructure
  • Experience bullets leading with technical actions and business outcomes
  • Education and location details positioned for quick scanning

Maya Davis

maya@example.com (212) 555-0113 New York, NY in/example-maya

Summary

Mid-Level Full Stack Web Developer specializing in merchant-facing financial tools and high-throughput data platforms. Built scalable dashboard architectures at Square and optimized complex data ingestion pipelines using React, Node.js, and PostgreSQL. Focused on improving system performance and modular microservices architecture.

Experience

Mid-Level Full Stack Web Developer New York, NY
Square Jun 2022 - Present
  • Engineered a real-time merchant analytics dashboard using React and GraphQL, enabling 180,000+ small business owners to track sales performance with sub-second latency.
  • Optimized backend SQL queries and implemented Redis caching for payment processing endpoints, reducing page load times by 34% during peak traffic periods.
  • Mentored 2 junior developers on frontend architecture and state management patterns, increasing the team's average sprint velocity by 18%.
  • Architected a modular microservices architecture for internal billing tools using Node.js and Docker, consolidating 3 legacy systems into a unified platform and saving $45K in annual infrastructure costs.
Junior Full Stack Web Developer New York, NY
Palantir Jan 2020 - May 2022
  • Developed end-to-end data ingestion features for an internal monitoring tool, utilizing Python and PostgreSQL to process 650,000+ telemetry events daily.
  • Redesigned the user onboarding flow for a client-facing portal, increasing successful account activation rates from 62% to 78% within two quarters.
  • Spearheaded the migration of a legacy frontend codebase to a modern React-based framework, reducing technical debt and cutting build times by 42%.

Education

B.S. Computer Science
Columbia University 2015 - 2019

Skills

JavaScript · Python · SQL · Git · REST APIs · React · Node.js · PostgreSQL · Docker · Redis · Microservices · GraphQL · AWS · CI/CD

What makes this resume effective

  • This resume meets the hiring bar for mid-level developers by demonstrating end-to-end feature ownership, performance optimization, and team mentorship.
  • Notice how Maya Davis at Square highlights the transition from execution to architecture by describing the modular microservices system she built to consolidate legacy tools.
  • The Palantir section shows measurable user impact, such as increasing account activation rates to 78%, which proves the developer understands the business value of their code.

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How to write better bullet points

Before

Worked on the merchant dashboard using React.

After

Engineered a real-time merchant analytics dashboard using React and GraphQL, supporting 180,000+ users with sub-second latency.

It specifies the scale, the stack, and the performance outcome rather than just listing a task.

Before

Helped junior developers with their code.

After

Mentored 2 junior developers on state management patterns, increasing the team's average sprint velocity by 18%.

It quantifies the impact of mentorship on team productivity instead of describing a vague activity.

Before

Updated the backend to make it faster.

After

Optimized backend SQL queries and implemented Redis caching, reducing page load times by 34% during peak traffic.

It identifies the specific technical solution and the measurable performance gain achieved.

Mid-Level Full Stack Web Developer resume writing tips

  • Highlight optimizations that improved system performance or reduced infrastructure costs.
  • Mention specific instances where you mentored others or improved team workflows.
  • Connect full-stack features to specific user metrics or business outcomes.

Common mistakes

  • Focusing only on tickets completed rather than features owned.
  • Listing technologies without showing how they solved a specific problem.
  • Neglecting to mention cross-functional collaboration with product or design.

Frequently asked questions

Is this resume right for someone with 3-5 years of experience?

Yes if you’ve transitioned from simple bug fixes to owning complete features and making independent technical trade-offs.

Yes, if you have moved past simple bug fixes into owning entire feature sets and making technical trade-offs. No, if you are still primarily working under the direct guidance of a senior lead for every architectural decision.

What if I have only worked on the frontend or backend?

Use this template by emphasizing how your deep expertise in one area, such as SQL optimization, directly improves the other side of the stack.

This template still applies, but you should emphasize how your deep expertise in one area impacts the other side of the stack. In Maya's resume, notice how she connects her backend SQL optimizations directly to frontend page load improvements.

What if I don't have metrics like this?

Substitute business metrics with proxy signals like reduced build times, improved code standards, or faster ticket turnaround.

You can substitute hard metrics with proxy indicators like reduced build times, decreased ticket turnaround, or standardized code patterns. The goal is to show that you are measuring the success of your work beyond just verifying that the code runs.

How much should I change before applying?

Maintain the impact-heavy structure but swap the specific tech stack and cloud providers to mirror the requirements in the job description.

Keep the structure of the impact-heavy bullets but swap the specific tech stack to match the job description. If a role emphasizes AWS over Docker, ensure your most prominent bullets reflect your cloud infrastructure experience.

What do hiring managers focus on at this level?

Recruiters look for evidence that you can own a feature from ideation to deployment without needing constant senior-level supervision.

Recruiters look for evidence that you can be trusted with a feature from ideation to deployment without constant hand-holding. This resume signals that reliability by showing Maya's ability to consolidate legacy systems and mentor others simultaneously.

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