Software Engineer Senior

KEVIN DELONG Senior Software Developer

***.***********@*****.***

github.com/kevindelon146

**** ********** ****** **, ***** Blanc, MI 48439

PROFESSIONAL SUMMARY

Senior Full Stack Software Engineer with 7+ years of experience delivering robust, cloud-native applications across industries such as healthcare, logistics, fintech, and e-commerce. Strong expertise in backend development using Python

(Django, Flask), Node.js (Nest.js, Express.js), C# (.NET Core, ASP.NET ), and Java (Spring Boot), with advanced proficiency in modern front-end frameworks including React, Next.js, Angular, Vue.js, and TypeScript. Skilled in designing and maintaining RESTful, FastAPI, and GraphQL APIs, microservices, and scalable, secure architectures following domain driven design. Adept at deploying to cloud platforms (AWS, GCP), managing CI/CD pipelines, and leveraging Docker and Kubernetes for container orchestration. Demonstrated ability to integrate third-party services (Stripe, Shopify, OpenAI), build multi-tenant and real-time systems, and implement security practices aligned with OAuth2, JWT, HIPAA, and GDPR. Known for clean code, system performance, and team leadership in Agile environments. CORE COMPETENCIES

Programming Languages — Javascript (JS. ES6+), Typescript (TS), Python, Java, .NET, C# Front-End Development — HTML, CSS, React,Js, React Admin, Next.Js, GSAP, Remix, React Native, Redux, ContextAPI, Zustand, Tailwind CSS, Boostrap, Ant Design, DaisyUI, Server-Side Rendering (SSR), Static Site Generation (SSG), Incremental Site Generation (ISG)

Back-End Development — Java, .NET, C#, Node.js, Express.js, NestJS, Flask, FastAPI, Django, Spring Boot, GraphQL, RESTful API design

Database Management — SQL, NoSQL, PostgreSQL, MySQL, MongoDB, CosmosDB, DynamoDB, Firebase, TypeORM, Sequelize, Hibernate, Prisma, JPA, Supabase, Microsoft Azure Data Studio, SQL. Alchemy, RDBMS, Google BigQuery Cloud and DevOps — AWS, Lambda Functions, GCP, Google Cloud Functions, Google Task Queues, Docker, Containerization, Salesforce Marketing Cloud (SFMC), CQRS, Cloud, Continuous Integration/Continuous Delivery/ Continuous Deployment (CI/CD), 53, SNS, SQS, Event Bridge, RabbitMQ, BullMQ, API Gateway, Linux (System Administration, Shell Scripting, Environment Configuration LLMs & AI Platforms: — Open AI - ChatGPT, Google Vertex AI - Gemini Pro, Gemini Flash, Document AI, AI Platform, Chat & Search Apps, Vector Embeddings

Data Visualization and BI Tools: — PowerBL, Looker, LookML, Chart.JS, D3.js, AmCharts, Charting Lib, Draw.io, Miro, UML Diagrams, Virtual Paradigm

Version Control Systems — Git, Github, Bitbucket, GitLab Payment Gateway Integration: — Stripe, PayPal, Payzone, Plaid Version Control Systems: — Git, Github, Bitbucket, GitLab API Interfaces & Docs: — GraphQL, RESTful API design, FastAPI, SOAP API, Swagger, JSDoc Workflows: — Pipedream, Hookdeck, Cloudflare, N8N

Software Development Practices — Design and development, Software development lifecycle management, Research and development, Performance optimization, NX Monorepo, SaaS, Scalable Infrastructure, Microservices Architecture, System Architecture, Technical Documentation

Security: — OAuth2, Role-Based Access Control, JWT, Rate Limiting, Audit Logs Project Management — SCRUM, Agile Development Methodologies, Sprint, Kanban, JIRA, ClickUp, Linear, Trello UI/UX Design — UI and UX principles

Testing — Playwright, Jest, Supertest

Quality and Standards — Eslint, Husky, Prettier

Logging and Observation: — Sentry, GlitchTip, Datadog, BetterStack Logtail, Cloudwatch Other Skills and Qualities — Cursor (AI-powered IDE/Tooling), Multilingual programming, Database Design, Database Migration, Domain-Driven Design (DDD), Mentorship, Design Patterns, Distributed Systems, Project Ownership, Team Lead, Work Independently, Operational Excellence, munication Skills, Perf Performance Optimization Techniques PROFESSIONAL EXPERIENCE

Senior Software Engineer

Magna International

Dec 2022 – Present

•Engineered backend solutions using Node.js, Django, .NET Core, and Java that increased system stability by 55%, reducing downtime and ensuring seamless performance for high-volume workloads across cloud environments.

•Designed and optimized RESTful, FastAPI, and GraphQL APIs that cut integration time by 40%, enabling frontend teams to deliver new features rapidly and improving cross-team collaboration.

•Enhanced PostgreSQL and MongoDB performance through advanced indexing and caching strategies, reducing query latency by 50% and supporting millions of concurrent users.

•Deployed cloud-native applications to AWS and GCP, lowering infrastructure costs by 30% while improving uptime, scalability, and disaster recovery readiness.

•Implemented secure authentication workflows leveraging OAuth2, JWT, and role-based access controls, protecting sensitive user data and aligning with HIPAA and GDPR standards.

•Developed responsive, modern front-ends in React, Next.js, and TypeScript, improving load times, accessibility, and user engagement across devices.

•Architected microservices and modular backend components following domain-driven design principles to improve maintainability, scalability, and testability.

•Automated CI/CD pipelines with GitHub Actions, Docker, and Kubernetes, accelerating release cycles, reducing deployment errors, and improving code quality.

•Integrated payment processing, transactional email, and notifications through Stripe, AWS SES, and Firebase Cloud Messaging to enhance user workflows.

•Mentored 5 junior engineers in backend architecture, clean coding practices, and cloud deployment strategies, promoting skill growth and collaboration.

•Established observability practices by implementing CloudWatch and Datadog dashboards, creating proactive monitoring and incident response processes.

•Collaborated with designers, QA, and product managers to align technical solutions with business requirements, ensuring on-time and high-quality delivery.

•Authored detailed technical documentation, onboarding materials, and code standards to streamline knowledge transfer and maintain consistency across teams.

•Improved automated test coverage with Jest, Cypress, and Playwright, reducing regressions and maintaining high quality releases in continuous delivery pipelines

Full Stack Engineer

Trijicon

Dec 2021 – Nov 2022

•Developed MVP applications using Flask, FastAPI, and .NET Core that accelerated project delivery by 45%, securing major contracts and demonstrating rapid prototyping capabilities.

•Created AI-driven APIs in Python and Node.js, improving document processing speeds by 50%, reducing manual work, and enhancing data accuracy for end users.

•Built dynamic React and Next.js front-ends that increased user engagement and adoption by 35%, delivering intuitive experiences and modern interfaces.

•Managed GCP infrastructure, automating deployments with Cloud Build and Cloud Run to cut release times by 40%, improve reliability, and streamline operations.

•Designed secure authentication systems and role-based access controls to protect sensitive healthcare data while meeting compliance requirements.

•Integrated Gemini AI search, document analysis workflows, and custom search interfaces into full-stack applications to deliver intelligent user experiences.

•Developed real-time collaboration tools leveraging Firebase Realtime Database and Firestore, improving team productivity and data synchronization.

•Optimized FastAPI and Django endpoints, implementing performance improvements to reduce API response times and improve scalability.

•Mentored 5 junior engineers on Python frameworks, GCP architecture, and modern DevOps best practices, fostering professional growth and knowledge sharing.

•Established coding standards, detailed technical documentation, and automated testing practices to maintain quality and consistency across deliverables.

Software Engineer

Harman International

Jan 2015 – Nov 2021

•Led backend development in Node.js, Django, .NET Core, and Java, improving system performance by 60% and scaling infrastructure to support a 4x increase in daily active users.

•Developed modular front-ends in React, Angular, and TypeScript that reduced maintenance by 30%, enhanced accessibility, and improved usability across enterprise applications.

•Created RESTful and GraphQL APIs supporting complex workflows, accelerating feature delivery by 35% and enabling cross-platform data integrations.

•Implemented Azure-based CI/CD pipelines that cut deployment times by 50%, increased release frequency, and reduced production incidents.

•Engineered encryption protocols, secure access controls, and audit logging workflows to ensure compliance with HIPAA and FERPA regulations.

•Managed Azure infrastructure for both monolithic and microservices architectures, improving scalability and system reliability.

•Integrated Power BI dashboards and data visualizations to deliver actionable insights and real-time reporting for business stakeholders.

•Built reusable UI component libraries and design systems to standardize frontend development and increase productivity across teams.

•Mentored 10+ developers and interns on architecture best practices, Agile methodologies, and modern testing strategies to elevate team performance.

•Created automated monitoring and alerting systems that proactively detected and resolved production issues before they impacted users.

•Led sprint planning, backlog refinement, and cross-team collaboration sessions to align goals, share knowledge, and drive project success.

•Developed scalable FastAPI and Node.js services supporting real-time analytics, data processing, and external integrations.

•Improved API reliability and performance by implementing caching layers, rate limiting, and circuit breaker patterns across critical services.

•Championed clean code principles, refactoring initiatives, and continuous improvement practices to reduce technical debt and increase maintainability

EDUCATION

Bachelor’s Degree in Computer Engineering

Lawrence Technological University

2014 Fenton, MI

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