Kevin Delong
Senior Software Engineer
Grand Blanc, US.About
Results-driven Senior Software Engineer with over 7 years of experience in full-stack development, specializing in scalable, high-performance applications across diverse industries. Expertly leverages Python, Node.js, .NET/C#, and Java for robust backend systems, coupled with React, Next.js, and Angular for dynamic frontends. Proven leader in building RESTful/GraphQL APIs, deploying cloud-native solutions (AWS, GCP, Azure), and implementing CI/CD pipelines, consistently driving performance optimization and mentoring high-performing teams for measurable impact.
Work
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Summary
Led the architectural design and deployment of a complex logistics platform, integrating advanced features and optimizing performance to meet critical business objectives.
Highlights
Spearheaded the design and launch of a complex logistics platform, collaborating cross-functionally to integrate real-time tracking modules and ensure smooth, high-performance deployment.
Engineered CI/CD pipelines and Kubernetes orchestration to automate deployments, reducing release timeframes by 40% and improving reliability for continuous delivery initiatives.
Refined NestJS and Django backend systems, increasing API throughput by 50% to handle over 10M monthly transactions while upholding strict security standards.
Created GraphQL APIs serving over 500K daily requests, enabling efficient data retrieval and enhancing frontend development workflows through flexible query capabilities.
Implemented robust OAuth2, JWT, and SAML authentication strategies, achieving zero breaches and full compliance with regulatory standards.
Integrated Stripe and PayPal payment workflows, reducing payment-related support tickets by 20% and streamlining billing operations.
Built AI-driven recommendation services using OpenAI and Vertex AI, increasing customer engagement metrics by 25% through intelligent personalization.
Mentored and coached 5 engineers, improving delivery velocity and code quality by 25% through the adoption of clean code standards.
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Summary
Led the development and delivery of AI-powered document automation tools, enhancing data processing efficiency and team productivity.
Highlights
Led the design and delivery of AI-powered document automation tools from concept to production, leveraging GCP, Vertex AI, and Firebase technologies.
Delivered 5 MVPs in under six months, accelerating the go-to-market cycle by 45% and ensuring product alignment with stakeholder feedback.
Integrated Vertex AI and Document AI models, increasing data classification accuracy by 50% and improving workflow efficiency for legal and public sector clients.
Developed FastAPI and Node.js microservices, processing over 1M daily requests to ensure scalability and robust performance under peak loads.
Architected responsive frontends in React and Next.js, implementing SSR and caching to improve page speed by 35% and enhance user experience.
Managed a 7-person engineering team, maintaining a 90% sprint completion rate through effective planning and mentorship.
Optimized Lambda configurations and warm pools, cutting cold start latency by 30% to ensure consistent performance for critical serverless endpoints.
Enhanced Firestore and BigQuery performance, decreasing query response times by 40% and supporting data-heavy reporting needs for critical insights.
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Summary
Contributed to the development and optimization of the Pathways Certification Platform, focusing on scalability, user experience, and compliance.
Highlights
Designed and launched the Pathways Certification Platform using microservices architecture, supporting over 200K users and meeting complex compliance requirements.
Led the migration of monolithic systems to Node.js and .NET Core microservices, increasing scalability by 40% and enabling smoother feature rollouts.
Reduced frontend load times by 30% by implementing React SSR and streamlining data pipelines, significantly improving user engagement.
Created GraphQL APIs handling 500K+ monthly queries, facilitating flexible data access and reducing frontend development cycles.
Developed reusable component libraries in React and Angular, cutting development time for new features by 25% and standardizing UI patterns.
Managed a 5-person Agile development team, consistently delivering high-quality releases and fostering a collaborative environment.
Implemented CI/CD pipelines with Azure DevOps, automating builds, tests, and deployments to improve release consistency.
Integrated OAuth2 and JWT authentication mechanisms, ensuring HIPAA and FERPA compliance and securing sensitive user data.
Languages
English
Skills
Programming Languages
Javascript (JS, ES6+), Typescript (TS), Python, .NET/C#, Java.
Front-End Development
HTML, CSS, React.js, Next.js, React Admin, Angular.js, Vue.js, GSAP, Remix, React Native, Redux, ContextAPI, Zustand, Tailwind CSS, Bootstrap, Ant Design, DaisyUI, Server-Side Rendering (SSR), Static Site Generation (SSG), Incremental Site Generation (ISG).
Back-End Development
Node.js, Express.js, Nest.js, Flask, Django, FastAPI, Spring Boot, .NET Core.
Database Management
SQL, NoSQL, PostgreSQL, MySQL, MongoDB, CosmosDB, DynamoDB, Firebase, TypeORM, Sequelize, Hibernate, Prisma, Supabase, Microsoft Azure Data Studio, SQL Alchemy, RDBMS, Google BigQuery.
Data Visualization & BI Tools
PowerBI, Looker, LookML, Chart.JS, D3.js, AmCharts, Charting Lib, Miro, UML Diagrams, Virtual Paradigm.
Payment Gateway Integration
Stripe, PayPal, Payzone, Plaid.
Cloud & 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), S3, SNS, SQS, Event Bridge, RabbitMQ, BullMQ, API Gateway, Terraform, CloudFormation, Kubernetes, Azure DevOps, GitHub Actions.
API Interfaces & Docs
GraphQL, RESTful API design, SOAP API, Swagger, JSDoc.
Version Control Systems
Git, Github, Bitbucket, GitLab.
Workflows
Pipedream, Hookdeck, Cloudflare, N8N.
Security
OAuth2, Role-Based Access Control, JWT, Rate Limiting, Audit Logs, IAM, Zero-Trust Policies.
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, Database Design, Database Migration, Domain-Driven Design (DDD), Design Patterns, Distributed Systems, Operational Excellence, Performance Optimization Techniques.
Project Management
SCRUM, Agile Development Methodologies, Sprint, Kanban, JIRA, ClickUp, Linear, Trello, Project Ownership.
UI/UX Design
UI and UX principles.
LLMs & AI Platforms
Open AI - ChatGPT, Google Vertex AI - Gemini Pro, Gemini Flash, Document AI, AI Platform, Chat & Search Apps, Vector Embeddings.
Logging and Observation
Sentry, GlitchTip, Datadog, BetterStack Logtail, Cloudwatch.
Testing
Playwright, Jest, Supertest.
Quality and Standards
Eslint, Husky, Prettier, Clean Code Standards.
Other Skills and Qualities
Multilingual programming, Mentorship, Team Lead, Work Independently, Communication Skills, Problem-Solving, Strategic Planning.