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Hartej Singh

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About Me

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Software Engineer

Pythonista by Day, AI Fanatic by Night…

Fervent and persistent problem solver with a knack for Python programming language driven by inquisitive nature and an insatiable appetite for coding. Enhancing my competence by gaining experience and enthusiastic about developing a career in Artificial Intelligence as the foundation. A quick learner with keen observations and a determination to get things done on time.

Outside of code, I’m a big motor-head and staying immersed in tech innovations. I’m always eager to connect with like-minded individuals passionate about AI, backend engineering, or building the future with GenAI.

Cover Letter

A personalized introduction highlighting my passion for Software development and what I can bring to your team.

Dear Hiring Manager,

I’m a Software Engineer with a strong focus on Python development, backend architecture, and cloud-native solutions on GCP. Over the past few years, I’ve designed and deployed scalable systems using Flask, FastAPI, GraphQL, and SQL/NoSQL databases, while automating CI/CD pipelines and containerized deployments for reliability and speed.

My work extends deeply into AI engineering, where I’ve built and orchestrated intelligent agent systems with LLMs such as OpenAI, Claude, and Gemini. I’ve designed Retrieval-Augmented Generation (RAG) pipelines with vector databases like Pinecone, AlloyDB (pgvector), and MongoDB, improving semantic search accuracy and enabling faster, more relevant knowledge retrieval.

In addition to my technical background, I’ve taken on leadership responsibilities as a Product Owner, driving GenAI projects end-to-end — from understanding client requirements to architecting and delivering production-grade AI solutions that cut down manual effort and improved efficiency by over 50%.

I’m also passionate about research and innovation, with a published paper on optimizing energy trade in Virtual Power Plants (Springer, ICDAM 2024). My achievements include winning Kotak Mahindra Bank’s REIGN Hackathon and reaching the finals of Google Cloud’s The NEXT Big Thing, experiences that strengthened my ability to innovate and lead under high-stakes environments.

I enjoy taking on complex challenges at the intersection of software engineering and applied AI, and I thrive on building solutions that deliver tangible impact.

I am enthusiastic about opportunities that allow me to apply my skills in Python development, AI integration, and cloud-native architecture to create meaningful and reliable solutions. I am confident my background and drive for innovation would enable me to make a positive contribution.

Thank you for your time and consideration. I look forward to the opportunity to discuss how my skills and experiences can align with the needs of your team.

Sincerely,
Hartej Singh

Skills

This section enlists some of my top skills and my level of expertise in them.

Python Programming Language 95%
GenAI & LLMs 85%
RAG & Vector Databases 80%
Backend Development 90%
Cloud & DevOps (GCP) 75%
System Design 75%



Programming & Frameworks
Python, Flask, FastAPI, Pydantic, GraphQL, WebSockets, RESTful APIs, Microservices

Generative AI & NLP
LLMs (OpenAI, Claude, Gemini), RAG Systems, Vector Databases, Embedding Models, Prompt Engineering, Agent Orchestration (Agentspace, MCP), Indexing (HNSW, SCANN), NLP

STRENGTHS

  • Observational skills and strong attention to detail
  • Problem-solving and analytical skills
  • Teamwork and communication
  • Perseverance and resourcefulness



Databases & Storage
Vector Databases (pgvector), Pinecone, AlloyDB, BigQuery, MongoDB, PostgreSQL (SQL), NoSQL Databases

Cloud & DevOps
Google Cloud (GCP), VertexAI, Kubernetes, Cloud Run, Workbench VMs, Serverless Architecture, Git, Docker, CI/CD Pipelines, GitHub Actions

LANGUAGES

  • English (Full Professional Proficiency)
  • Hindi (Native or Bilingual Proficiency)
  • Punjabi (Limited Working Proficiency)
  • Gujarati (Limited Working Proficiency)
  • Japanese (Elementary Proficiency)


Resume

This is a glimpse of my resume. To view the full version, click this.

Professional Experience

Software Engineer (AI & Python Backend)

JULY 2023 - PRESENT

TecholutionHyderabad (IND)

Techolution is a leader in custom AI solutions, delivering end-to-end innovation with a focus on real-world impact and responsible AI governance.

  • Developed scalable backend systems using Python, Flask, FastAPI, Pydantic, and GraphQL over WebSockets, integrating SQL/NoSQL databases.
  • Built and deployed intelligent agents with orchestration leveraging LLM providers like OpenAI, Claude, and Gemini, improving query response accuracy and lowering latency by 25%.
  • Designed and optimized RAG pipelines using embedding models with vector databases like Pinecone, AlloyDB (pgvector), BigQuery, and MongoDB, enhancing context-aware search accuracy by 40%.
  • Led GenAI projects as Product Owner, building a production-grade semantic search engine that cut user search time by over 50%.

Internship Trainee

JUNE - AUGUST 2022

Kotak Mahindra Bank

Worked on improving KEYA, Kotak's AI chatbot, by enhancing conversation flows and integrating user-centric features using Python and NLP tools.

  • Took part in re-architecturing and developing a strategy to expand the chatbot to incorporate new features based on the learnings from market mapping and research, improved the conversation flows, and devised a method to test the functioning of new versions of AI models as compared to the previous ones.
  • Applied NLP and GenAI concepts to optimize dialogue handling, with additional work on automation and UI/UX aligned with industry standards.

Education

Bachelor of Technology

2019 - 2023

Computer Science and Engineering (with spl. in IoT)

Vellore Institute of Technology, Vellore (IND)

All India Senior Secondary School Certificate Examination, Science - Class XII

2019

Central Board of Secondary Education

Scholar English Academy, Surat (IND)

All India Secondary School Certificate Examination — Class X

2017

Central Board of Secondary Education

J. H. Ambani Saraswati Vidya Mandir, Surat (IND)

Publications

Optimising Energy Trade in Virtual Power Plants with LSTM, Representative Houses, and Dynamic Programming

OCTOBER 2022 - MAY 2023

Published in Innovative Computing and Communications: Proceedings of ICICC 2024, Volume 6, Springer. Presented at the 5th International Conference on Data Analytics & Management (ICDAM 2024).

Developed a data processing pipeline, machine learning models, and optimised energy allocation strategies to minimise waste and maximise efficiency in household energy consumption.

Recognition

This section contains my accomplishments as awards, prizes, and certificates. 

First Prize in Kotak Mahindra Bank’s REIGN 2021-22

It was a 2-staged hackathon to reimagine banking. We made a fully-functional chatbot incorporated in a web application that could solve generic queries and also operate on personal bank accounts with an AI-based authentication protocol.

Third Prize in EnPhyThon
2019

It is a 24-hour contest conducted by the School of Advanced Sciences, VIT (SAS, Department of Physics). We developed a surveillance drone working prototype based on the concepts of optical fiber communication and lasers.

Finalist in Google Cloud The NEXT Big THING Hackathon
2022

Reached the top 6 final teams in this hackathon, open for all developers and professionals from all age demographics. We developed a solution prototype in Banking & Finance theme harnessing GCP services.

Honorable Mention in HackX 2021

It was a 3-day hackathon conducted by IEEE-SPS, VIT. Our project involved a portal for new coders who can look up for topics in various AI-suggested categories as well as ask their questions on it and get replies from other users of the website.

D2C Competitive Leader 2022 Award Nominee

Competitive leaders were ranked based on their performance in competitions organized on Unstop (then Dare2Compete).

IEEE Professional Communication Society

Finance and HR Chair (Board Position) at IEEE-PCS Chapter, VIT Vellore

Virtual Internship @ JPMorgan

Software Engineering Virtual Experience with Forage at JPMorgan Chase & Co.

Virtual Internship @ Walmart

Advanced Software Engineering Virtual Experience with Forage at Walmart Global Tech

Project with Industrial Internship @ IBM

Recipe Recognition with Deep Learning and IBM Watson