Full Stack Engineer

Kevin Hinojos

Senior Full Stack Engineer

*****.*******.*@*****.*** +1-432-***-**** Odessa, TX, 79763 linkedin.com/in/kevin-hinojos-5601b5367/ SUMMARY

Full Stack Software Engineer with 9+ years of experience designing and building performant, secure, and maintainable systems across AI, Healthcare, FinTech, SaaS and internal enterprise domains. Deeply familiar with various programming languages like Java, Python, Javascript, Typescript, C++. Proven ability to architect and deliver highly complex systems with clean abstractions and first-principle-driven designs. Equally comfortable building robust backend services, crafting intuitive UIs, and navigating messy domain logic. Especially strong in regulated environments, HIPAA, PCI-DSS compliance, AI and building systems that support real people doing hard jobs.

TECHNICAL SKILLS

- Languages: JavaScript, TypeScript, HTML5, CSS3, Python, Java, Go, Solidity

- Frontend: React.js, Next.js, Vue.js, Angular, Svelte, Tailwind CSS, Bootstrap, Material UI

- Backend: Node.js, Nest.js, Django, Flask, Laravel, Spring Boot, Gin, Gorilla

- Database: MongoDB, PostgreSQL, MySQL, Firebase, Redis, DynamoDB

- DevOps/Cloud: AWS, GCP, Azure, Docker, Kubernetes, CI/CD, NGINX, Terraform

- Web3: Solidity, Web3.js, Ethers.js, Smart Contracts, IPFS, Ethereum, Hedera

- Testing: Jest, Mocha, Cypress, Playwright, Selenium

- Tools: GitHub, GitLab, Bitbucket, Postman, Swagger, Figma, Jira WORK HISTORY

Full Stack Engineer

2am.tech Jan 2023 – Present Remote

Built a FastAPI-based ingestion pipeline that processed multi-format healthcare documents (PDFs, EHR exports), then used Python’s Tesseract OCR and AI-assisted logic to extract structured data from unstructured inputs.

Developed core backend logic using FastAPI and Prefect to parse patient data (ICD-10, CPT, NPI, insurance) and transform it into CMS-1500, UB-04, and X12 837 formats.

Used Snowflake to store, query, and audit billions of rows of claim data efficiently; optimized SQL with CTEs and materialized views for faster report rendering.

Wrote automated tests with Pytest and GitHub Actions to validate every PR, enforce 90%+ test coverage, and trigger staging previews.

Designed a Celery + Redis-based task queue to offload OCR, claim validation, and long-running eligibility checks (X12 270/271) asynchronously.

Integrated React.js claim review dashboards with backend APIs, showing AI-parsed data next to raw images for easy agent corrections.

Built AthenaHealth integration to pull patient records via API, then pushed validated claims back using transformed FastAPI endpoints.

Software Engineer

Scott Applications LLC Mar 2020 – Jan 2023 Remote

Built a multi-acquirer payment gateway from scratch using the MNNN stack (MongoDB, Nest.js, Node.js, Next.js), with robust APIs for payment lifecycle: capture, refund, void.

Designed PCI DSS-compliant backend flows with encrypted card storage, security tokenization, and third-party audit approval.

Created a smart routing engine in Node.js to dynamically route payments based on currency, issuer BIN, and acquirer uptime.

Built Prefect-like task runners for webhook retries and merchant notifications — included Slack alerts, 2FA dashboards, and signed payload validation.

Developed an automated Puppeteer-based browser handler to support a legacy acquirer with only widget-based checkout — handled form submission, token extraction, and response capture headlessly.

Used PostgreSQL and Redis to track KYC, merchant settings, and webhook logs with real-time filtering and audit trail for admins.

Integrated notification services with Mailgun + HTML templates to trigger alerts on webhook failures, KYC updates, and system health.

Senior Software Developer

Ease Web Development Mar 2018 – Mar 2020 Odessa, TX

Rebuilt the entire project quoting engine for a B2B web app using Vue.js and Flask, allowing dynamic configuration of pricing tiers based on rules and customer profile.

Designed a Django + PostgreSQL backend system to generate legal documents automatically from form submissions and PDFs.

Developed a custom component library in Vue.js and integrated it into multiple existing client dashboards for consistent UI/UX.

Refactored legacy jQuery-heavy pages into modern React components, reducing page load by over 45%.

Built an internal SSO tool using Flask, JWT, and Redis to unify user sessions across three client portals.

Used Airflow to automate nightly data rollups and triggered alerts to Slack when errors occurred. Junior Frontend Developer

Ease Web Development Apr 2016 – Mar 2018 Odessa, TX

Converted static HTML templates to dynamic React.js components connected to Laravel APIs, enabling reusable layouts and partials.

Built a custom calendar and notification module using Vue.js and integrated it into the company’s internal scheduling platform.

Implemented page transitions and animation logic using GSAP for an interactive educational platform.

Refactored the mobile styles of a major e-learning product using Tailwind CSS, improving readability and reducing CSS bloat.

Set up Cypress tests to validate user flows during checkout and onboarding experiences.

Migrated frontend assets to Webpack and improved build performance across environments. Web Development Intern

Ease Web Development Sep 2015 – Apr 2016 Odessa, TX

Created responsive HTML5/CSS3 landing pages for local businesses and nonprofits using Bootstrap.

Built a simple portfolio builder for clients using jQuery and PHP, allowing drag-and-drop layout changes.

Maintained and updated WordPress themes; wrote custom shortcodes and modified child themes.

Integrated Google Maps API for store locator widgets.

Helped migrate data from spreadsheets to MySQL and created import scripts in PHP.

Assisted senior devs with QA testing using Selenium scripts. EDUCATION

Bachelor's Degree in Computer Science University of Texas Permian Basin Aug 2012 – 2016

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