Full Stack Engineer

Building Intelligent, Scalable Platforms

I'm Satish Rajnale, a Full Stack Developer with 5+ years of experience building scalable web apps, backend systems, and AI-integrated tools using React, FastAPI, and cloud-native technologies. I deliver clean, efficient, and impactful solutions across the stack.

Tech Stack

I work with modern technologies and frameworks to build scalable, performant applications. Here's my comprehensive technology ecosystem with core and specialized skills highlighted.

PythonReactAWSPostgreSQL
FastAPIGolangGraphQLWebSocketsDebeziumKubernetesDockerHelmGitHub ActionsAirflowReact NativeFlutterTypeScriptReduxFirebaseRedisVarnishGrafanaK6SentryAuth0SendGridKnockMixpanelZendutyGoogle Sheets APIJiraConfluenceNotion

Design + Code

With over 5 years of experience as a Full Stack Developer, I've had the opportunity to work across both engineering and design roles—building scalable backend systems and crafting intuitive user interfaces.

My day-to-day involves translating complex product requirements into robust features, collaborating closely with cross-functional teams, and continuously improving user experience through thoughtful design and efficient code. This hybrid perspective allows me to bridge the gap between design and development—rapidly prototyping ideas, offering pragmatic design input, and delivering production-ready solutions. I take pride in building products that are not only functional but also elegant and user-friendly.

Impact-Driven Development

Focused on delivering features that drive real business value and improve user experience. I prioritize understanding product goals and translating them into scalable technical solutions that directly impact growth, retention, and revenue metrics.

Key Achievements: Reduced debugging time by 60%, improved user engagement by 40%, and delivered features that directly contributed to 25% revenue growth.

Backend & Infrastructure Excellence

Reduced debugging time by 60% through full-stack OpenTelemetry tracing across microservices. Designed and deployed FastAPI + GraphQL APIs handling 10M+ requests/day with sub-200ms response times via strategic Redis caching and PostgreSQL optimization. Proven expertise in Kubernetes, Docker, Helm, AWS, and CI/CD pipelines with GitHub Actions for seamless and secure production deployments. Integrated Debezium, Airflow, and WebSockets for real-time, event-driven architectures and data pipelines.

Tech Stack: FastAPI, GraphQL, PostgreSQL, Redis, Docker, Helm, Airflow, Ably, Debezium, Kubernetes, AWS, OpenTelemetry, Microservices

Mobile Development Mastery

2+ years specializing in React Native, delivering complete mobile solutions for startups. Built and shipped 2 production apps managing the entire tech stack - from FastAPI backend deployment on GCP to complex features like referral programs, cart management, and push notifications. Successfully published apps to both App Store and Play Store. Created and launched personal project "Skealm" - a habit tracker app on Google Play Store.

Highlights: Increased user engagement with referral programs by 30%, Real-time notification features, Cross-platform deployment

Frontend Engineering

Built and maintained React + TypeScript applications with 100+ reusable components. Implemented advanced patterns including custom hooks, Context API, and virtualized rendering for large datasets. Integrated Auth0, Apollo GraphQL, and real-time communication, while maintaining accessibility compliance and mobile-first responsive design.

Expertise: React, TypeScript, GraphQL, Auth0, Performance optimization, Accessibility, Responsive design

Emerging Technologies

Currently exploring LLM integration and vector databases (Qdrant) for next-generation applications. Experimenting with LangChain for context-aware AI features and prompt engineering techniques. Always staying ahead of the curve to identify technologies that can create competitive advantages and improve user experiences. Please feel free to explore my personal knowledgebase chatbot project for my recent experiment with AI.

Focus Areas: LLM Integration, Vector Databases, LangChain, AI/ML, Prompt Engineering, Next-gen Applications

Technical Projects & Learning

I continuously explore new technologies and build projects to expand my skills and stay current with industry trends. These projects demonstrate my commitment to learning and applying new technologies in practical applications.