Senior Software Engineer

GAJANAN WATTAMWAR

+919********* ************@*****.*** linkedin.com/in/gajanan-wattamwar github.com/Gajanan-Watt Portfolio SKILLS & OTHER

AI / LLM Systems : Generative AI, LLM Integration, LangChain, LangGraph, Tool-Calling, Multi-Step Orchestration, OpenAI & Groq APIs, AI-Assisted Development (Claude Code, GitHub Copilot) Distributed Systems & Backend : Python, FastAPI, Node.js, NestJS, REST APIs, Event-Driven Architecture, Apache Kafka, Redis (key-schema design), Idempotent/Retry-Safe Pipeline Design, Microservices, Docker, Kubernetes Cloud & Data : AWS (Lambda, S3), Google Cloud Platform, Azure (Cognitive Services/OCR), MongoDB (Schema design), MySQL, PostgreSQL, SQL

Frontend : React.js, Redux, Next.js, TypeScript, JavaScript, Angular, Tailwind CSS, Material UI, shadcn/ui Practices : Agile, CI/CD, System Design

PROFESSIONAL EXPERIENCE

Xometry Feb 2026 to Current

Software Engineer (L2)

● Designing and developing the SSOT (Single Source of Truth) platform a centralized, event-driven service that orchestrates job and order creation as idempotent, replayable workflows across multiple business domains and scalable microservices.

● Developing Python backend services and API integrations that automate cross-domain business workflows and improve reliability across distributed systems.

● Building Generative AI and LLM-powered automation features, integrating AI capabilities directly into backend workflows for intelligent business-process automation.

● Shipping full-stack features in React, Node.js, and Python wiring backend APIs and AI-powered services into production enterprise applications.

● Provisioned and configured AWS Lambda functions, triggered by SSOT order/job events, to render and dispatch dynamic HTML email templates via SendGrid with template assets stored in S3 decoupling transactional notification flows from the core orchestration service.

● Tech Stack: Python, Node.js, NestJS, TypeScript, React, REST APIs, Microservices, Redis, Apache Kafka, AWS

(Lambda, S3).

Phenom Nov 2024 to Feb 2026

Product Development Engineer

● Owned the system architecture and MongoDB schema design for a real-time voice AI agent (Python, FastAPI, LiveKit) using LangChain/LangGraph for LLM orchestration and tool-calling structuring session, candidate, and conversation-turn collections to support low-latency reads/writes during live calls and efficient retrospective querying.

● Configured AWS Lambda functions and S3 buckets to process post-session events (transcript generation, downstream candidate-engagement triggers) and store interview audio/transcripts for retrieval by analytics services.

● Designed idempotent, retry-safe Kafka pipelines and Redis-backed state management for long-running, real-time interview sessions ensuring exactly-once processing and safe recovery/replay on failure.

● Built Generative AI and LLM-powered automation to improve conversational AI, automate candidate engagement, and support intelligent decision-making mid-interview.

● Collaborated with cross-functional teams to deploy and operate scalable, cloud-native backend services on AWS.

● Tech Stack: Python, FastAPI, LangChain, LangGraph, React, Vue.js, TypeScript, AWS (Lambda, S3), Redis, Apache Kafka, LiveKit, Tornado.

Bintix Mar 2022 to Nov 2024

Software Engineer

● Designed and developed scalable full-stack applications using React, Node.js, NestJS, and RESTful APIs for international clients.

● Built backend services and API integrations on Google Cloud Platform, enabling workflow automation and secure data exchange.

● Created a Python automation pipeline combining Azure OCR and LLMs to extract, process, and classify packaging information from product images a Generative AI document-processing solution that materially cut manual review effort.

● Developed reusable frontend components and backend integrations, improving operational efficiency by 50% through optimized workflows.

● Contributed to microservices architecture, CI/CD pipelines, and performance optimization across multiple enterprise products.

● Tech Stack: Python, Node.js, NestJS, React, Angular, TypeScript, GCP, Apache Kafka, REST APIs, Material UI. Freelance Developer Mar 2020 to Feb 2022

Full-stack Developer

● Designed and built full-stack web applications using React, Node.js, and Express.js for direct clients.

● Built secure RESTful APIs and integrations, improving data retrieval performance by 30%.

● Optimized performance through Redis caching and NGINX reverse proxying, reducing response latency.

● Tech Stack: React, Node.js, Express.js, Redis, NGINX, REST APIs. Skillovate Jun 2018 to Sep 2018

Software Engineer Intern

● Assisted in building responsive web applications and backend REST APIs; built embedded/IoT prototypes on Arduino and Raspberry Pi.

EDUCATION

● Masai School - FullStack Development Bootcamp 2021

● Dr. D.Y.Patil College of Engineering, Akurdi, Pune - B.Tech (Instrumentation and Control)2019 ACHIEVEMENTS & AWARDS

● Achieved the top position as the first-place winner in the Robowar competition at COEP.July 2022

● Participated and emerged as the first prize winner in the Dog Fight competition at COEP.Sep 2023 PROJECTS

● LinkedIn Easy-Apply Automation Agent - Python + Playwright automation (~1,500 LOC) that drives LinkedIn's Easy Apply flow end-to-end Github

● Pixel Art - A NFT artwork platform using a diverse range of color palettes.Github

● Social Media Platform - Created a versatile social networking website.Github

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