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# Alex Johnson
**Full-Stack Software Engineer**

alex.johnson@email.com | (555) 123-4567 | [linkedin.com/in/alexjohnson](https://linkedin.com) | [github.com/alexjohnson](https://github.com) | San Francisco, CA

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## Summary

Results-driven Full-Stack Software Engineer with 6+ years of experience designing and delivering scalable web applications across fintech and SaaS domains. Proven track record of reducing infrastructure costs by 40%, improving API response times by 60%, and leading cross-functional teams of up to 8 engineers. Expertise in TypeScript, React, Node.js, and cloud-native architectures (AWS, GCP).

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## Technical Skills

**Languages:** TypeScript, JavaScript (ES2022+), Python, Go, SQL  
**Frontend:** React, Next.js, Vue 3, Tailwind CSS, Redux Toolkit, React Query  
**Backend:** Node.js, Express, NestJS, GraphQL, REST APIs, gRPC  
**Databases:** PostgreSQL, MongoDB, Redis, Elasticsearch, DynamoDB  
**Cloud & DevOps:** AWS (EC2, Lambda, S3, RDS, SQS), Docker, Kubernetes, Terraform, GitHub Actions, CI/CD  
**Testing:** Jest, Vitest, Playwright, React Testing Library, Cypress  
**Tools:** Git, Jira, Figma, Datadog, Sentry, Linear

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## Professional Experience

### Senior Software Engineer — Stripe, Inc.
*San Francisco, CA | March 2022 – Present*

- Architected and shipped a real-time fraud detection dashboard used by 5,000+ merchants, reducing fraudulent transaction review time by **62%** using React, WebSockets, and a Go microservice.
- Led migration of a legacy monolith to event-driven microservices (NestJS + Kafka), cutting deployment frequency from bi-weekly to **15+ deployments per day**.
- Optimised PostgreSQL query performance through indexing strategies and connection pooling, reducing p95 API latency from 820ms to **310ms**.
- Mentored 3 junior engineers via structured bi-weekly code reviews and pair-programming sessions; two received promotions within 12 months.
- Collaborated with product and design to define technical requirements for 6 major feature launches, contributing to $4M ARR increase.

**Stack:** TypeScript, React, Go, NestJS, PostgreSQL, Kafka, Redis, AWS, Kubernetes

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### Software Engineer II — Brex
*Remote | January 2020 – February 2022*

- Built a self-serve expense management portal from scratch, handling 50,000+ monthly active users, using Next.js (SSR) and a Node.js/GraphQL backend.
- Reduced AWS infrastructure spend by **40%** ($180K/year) by right-sizing EC2 instances and migrating batch jobs to AWS Lambda.
- Implemented end-to-end testing suite with Playwright, achieving 94% coverage on critical user flows and eliminating a category of regression bugs.
- Designed a role-based access control (RBAC) system integrated with Auth0, supporting 7 permission levels across 3 product tiers.

**Stack:** Next.js, TypeScript, GraphQL, Node.js, PostgreSQL, AWS Lambda, Auth0, Docker

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### Software Engineer I — Gusto
*San Francisco, CA | July 2018 – December 2019*

- Developed payroll calculation engine components (React + Ruby on Rails) serving 2,000+ small-business clients.
- Integrated third-party payroll tax APIs (Avalara, TaxJar), automating compliance checks for 50 US states.
- Improved CI pipeline run time by 35% by parallelising Jest test suites across GitHub Actions workers.

**Stack:** React, Ruby on Rails, PostgreSQL, RSpec, AWS S3, GitHub Actions

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## Education

### B.S. Computer Science — University of California, Berkeley
*Graduated May 2018 | GPA: 3.8/4.0*

Relevant Coursework: Data Structures & Algorithms, Distributed Systems, Database Systems, Operating Systems, Computer Networks

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## Projects

### **Resumark** *(Open Source — 1.2k GitHub Stars)*
A client-side Markdown-to-PDF resume builder built with Next.js, React Markdown, and the browser Print API. Supports live preview, localStorage persistence, and ATS-clean exports. [github.com/alexjohnson/resumark](https://github.com)

### **SpendSight** *(Side Project)*
A personal finance dashboard that aggregates transactions via Plaid API and surfaces spending insights using D3.js visualisations. Deployed on Vercel with a serverless PostgreSQL (Neon) backend.

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## Certifications & Achievements

- AWS Certified Solutions Architect – Associate (2023)
- Google Cloud Professional Cloud Developer (2022)
- Speaker: "Migrating to Microservices at Scale" — Node.js Conf SF 2023
- Open-source contributor: React Query (15+ merged PRs), Zod (documentation)

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Alex Johnson

Full-Stack Software Engineer

alex.johnson@email.com | (555) 123-4567 | linkedin.com/in/alexjohnson | github.com/alexjohnson | San Francisco, CA

Summary

Technical Skills

Languages: TypeScript, JavaScript (ES2022+), Python, Go, SQL
Frontend: React, Next.js, Vue 3, Tailwind CSS, Redux Toolkit, React Query
Backend: Node.js, Express, NestJS, GraphQL, REST APIs, gRPC
Databases: PostgreSQL, MongoDB, Redis, Elasticsearch, DynamoDB
Cloud & DevOps: AWS (EC2, Lambda, S3, RDS, SQS), Docker, Kubernetes, Terraform, GitHub Actions, CI/CD
Testing: Jest, Vitest, Playwright, React Testing Library, Cypress
Tools: Git, Jira, Figma, Datadog, Sentry, Linear

Professional Experience

Senior Software Engineer — Stripe, Inc.

San Francisco, CA | March 2022 – Present

Architected and shipped a real-time fraud detection dashboard used by 5,000+ merchants, reducing fraudulent transaction review time by 62% using React, WebSockets, and a Go microservice.
Led migration of a legacy monolith to event-driven microservices (NestJS + Kafka), cutting deployment frequency from bi-weekly to 15+ deployments per day.
Optimised PostgreSQL query performance through indexing strategies and connection pooling, reducing p95 API latency from 820ms to 310ms.
Mentored 3 junior engineers via structured bi-weekly code reviews and pair-programming sessions; two received promotions within 12 months.
Collaborated with product and design to define technical requirements for 6 major feature launches, contributing to $4M ARR increase.

Stack: TypeScript, React, Go, NestJS, PostgreSQL, Kafka, Redis, AWS, Kubernetes

Software Engineer II — Brex

Remote | January 2020 – February 2022

Built a self-serve expense management portal from scratch, handling 50,000+ monthly active users, using Next.js (SSR) and a Node.js/GraphQL backend.
Reduced AWS infrastructure spend by 40% ($180K/year) by right-sizing EC2 instances and migrating batch jobs to AWS Lambda.
Implemented end-to-end testing suite with Playwright, achieving 94% coverage on critical user flows and eliminating a category of regression bugs.
Designed a role-based access control (RBAC) system integrated with Auth0, supporting 7 permission levels across 3 product tiers.

Stack: Next.js, TypeScript, GraphQL, Node.js, PostgreSQL, AWS Lambda, Auth0, Docker

Software Engineer I — Gusto

San Francisco, CA | July 2018 – December 2019

Developed payroll calculation engine components (React + Ruby on Rails) serving 2,000+ small-business clients.
Integrated third-party payroll tax APIs (Avalara, TaxJar), automating compliance checks for 50 US states.
Improved CI pipeline run time by 35% by parallelising Jest test suites across GitHub Actions workers.

Stack: React, Ruby on Rails, PostgreSQL, RSpec, AWS S3, GitHub Actions

Education

B.S. Computer Science — University of California, Berkeley

Graduated May 2018 | GPA: 3.8/4.0

Relevant Coursework: Data Structures & Algorithms, Distributed Systems, Database Systems, Operating Systems, Computer Networks

Projects

Resumark (Open Source — 1.2k GitHub Stars)

A client-side Markdown-to-PDF resume builder built with Next.js, React Markdown, and the browser Print API. Supports live preview, localStorage persistence, and ATS-clean exports. github.com/alexjohnson/resumark

SpendSight (Side Project)

A personal finance dashboard that aggregates transactions via Plaid API and surfaces spending insights using D3.js visualisations. Deployed on Vercel with a serverless PostgreSQL (Neon) backend.

Certifications & Achievements

AWS Certified Solutions Architect – Associate (2023)
Google Cloud Professional Cloud Developer (2022)
Speaker: "Migrating to Microservices at Scale" — Node.js Conf SF 2023
Open-source contributor: React Query (15+ merged PRs), Zod (documentation)