# Harjap Singh Bal > Senior Full Stack Software Engineer | React.js | Node.js | TypeScript | AWS | Microservices | Cloud Applications Location: San Francisco Bay Area, United States Profile: https://flows.cv/harjap Full Stack Software Engineer with experience building scalable, high-performance web applications across logistics, finance, retail, and enterprise operations. I specialize in React.js, Node.js, TypeScript, AWS, and PostgreSQL, with a strong focus on clean architecture, performance optimization, and production-ready deployments. My experience includes building responsive front-end applications, architecting backend services and microservices, integrating APIs such as Gmail and OpenAI, and deploying secure cloud-based solutions using CI/CD, Docker, Kubernetes, and AWS. I’ve also contributed to reusable UI libraries, automation workflows, real-time dashboards, and AI-powered data extraction systems. I enjoy solving complex engineering problems, improving system efficiency, and building software that creates measurable business impact. I’m especially interested in opportunities where I can contribute to scalable product development, strong user experiences, and modern engineering practices. ## Work Experience ### Software Engineer @ Neonline Logistics Jan 2025 – Present | Hayward, CA • Architected a Node.js/Express microservice to handle webhook-based shipment notifications, filter noise, and persist structured orders into a PostgreSQL database with performance-tuned queries. • Integrated Gmail API to capture thread-based conversations for subject-matched orders, including attachments, and mirrored them into system inboxes for seamless ingestion. • Deployed services on AWS EC2 instances using PM2 for daemonization, log rotation, and implemented auto-restarts ensuring consistent uptime and service availability. • Automated CI/CD using Jenkins pipelines with linting, testing, and zero-downtime deployments to promote reliable and traceable software releases. • Employed AWS Secrets Manager to secure API credentials and environment variables, enhancing infrastructure security and minimizing operational overhead. • Leveraged OpenAI API with TensorFlow.js models to auto-extract key shipment details from PDF attachments, improving data capture accuracy and speed. ### Full Stack Engineer @ Sony Jan 2023 – Jan 2024 • Developed an internal ticket management dashboard in React.js to help various teams effectively track, resolve, and update customer support issues with ease. • Created dynamic front-end logic and backend API integrations using Node.js and PostgreSQL for employee operations data syncing and retrieval. • Collaborated with backend teams to refine and extend server-side logic ensuring efficient routing of API calls and proper error handling in all modules. • Embedded interactive graphs and visual charts in the frontend to give real-time insights into issue metrics and resolution rates. • Maintained over 85% test coverage with robust unit tests using Jest and React Testing Library, ensuring frontend quality and deployment confidence. ### Senior Software Developer @ USAA Jan 2022 – Jan 2023 | San Francisco Bay Area • Engineered highly reusable components for Noblr UI library using React and TypeScript, enhancing design consistency and developer efficiency across departments. • Introduced Redis and Memcached-based caching layer with database indexing to reduce query response times and backend load under high traffic. • Utilized Node.js worker threads for parallelizing intensive calculations, ensuring responsive and performant execution of policy logic services. • Enforced authentication with JWT and AWS Secrets Manager, structuring secure role-based access and encrypted token validation for APIs. • Deployed CI/CD pipelines with Jenkins to automate testing and rollouts, supporting quick delivery cycles and rollbacksafe deployments. ### React/Node JS Developer @ Iterate.ai Jan 2020 – Jan 2022 | San Jose, CA • Designed and implemented a Curbside Pickup web app using React and Redux, driving increased conversion and improved UX through intuitive interface design. • Created microservices using Node.js and Java Spring Boot to encapsulate business logic for inventory, scheduling, and order validation modules. • Integrated containerization with Docker and automated deployments with Kubernetes, ensuring zero-downtime updates and scalable performance. • Enhanced performance using lazy loading, memoization, and page prefetching, reducing load times and improving Lighthouse scores significantly. • Visualized business metrics such as store conversion and sales impact using interactive D3.js charts and embedded dashboards. ### React Developer @ Albertsons Companies Jan 2019 – Jan 2020 | Pleasanton, CA • Refactored legacy code and migrated to modern React.js with TypeScript, leading to more maintainable, reusable, and performant components. • Developed key loyalty program features like personalized offers and expiration alerts, which increased engagement and reward redemption rates. • Created dynamic layouts for product recommendation zones, increasing visibility for upsell opportunities and related purchases. • Built scalable reusable UI components that reduced frontend development time and unified brand design across ecommerce sites. • Used Laravel and PHP to develop and integrate backend API endpoints, connecting user actions with customer relationship systems and analytics tools. ### Software Developer @ Albertsons Companies Jan 2018 – Jan 2019 | United States Responsibilities: Optimized user-facing components for the e-commerce platform, resulting in a 25% increase in page load speed and a 15% improvement in customer engagement, significantly enhancing the overall shopping experience. Tested, debugged, and successfully deployed thousands of lines of code, ensuring robust functionality and high-quality software performance. Maintained graphic standards and branding throughout the product’s interface. ## Education ### Computer Software Engineering Hack Reactor ## Contact & Social - LinkedIn: https://linkedin.com/in/harjap96bal --- Source: https://flows.cv/harjap JSON Resume: https://flows.cv/harjap/resume.json Last updated: 2026-04-05