Hello, I'm

Sathish
Gnanaprakasam

Software, AI & Technology Consultant

Consult  ยท  Architect  ยท  Build  ยท  Enable

I help businesses plan, build and modernise software, data and AI-enabled products. 15+ years of experience spanning full-stack development, artificial intelligence, cloud infrastructure, data engineering, and corporate training.

What I Do Get in Touch
MERN Python Java LAMP AI & Machine Learning Cloud & DevOps Data Engineering Corporate Training

Full Stack Developer & AI Specialist

Full Stack Developer, AI Specialist and Technology Leader with 15+ years of experience spanning software engineering, team leadership, AI/ML and enterprise consulting.

Currently engaged through Toptal as a Senior Full Stack Developer on a large-scale enterprise application โ€” working with MERN, Snowflake, Kubernetes, Redis and AWS. Previous Toptal clients include Vetto AI, MentorsWithoutBorders and Quinde Foundation.

Prior to that, worked through Turing on AI model evaluation and prompt engineering for OpenAI โ€” evaluating thousands of model completions and contributing to LLM alignment across diverse NLP and coding tasks.

Before that, served as Technical Director at RVS Educational Trust, leading 35+ people across Digital Marketing, Software, Data Science and Networks teams โ€” backed by 7+ years of corporate technical training and full-stack development across MERN, LAMP, Python and Java stacks.

15+ Years Experience
50+ Projects Delivered
6+ Technology Domains

TOP 3% TALENT

Vetted byHire me
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Development

End-to-end web and mobile application development across MERN, LAMP, Java and Python stacks.

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AI & Data Science

Prompt engineering, LLM evaluation, model training, and applied data science for enterprise AI.

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Cloud & DevOps

AWS, Kubernetes, Docker, and modern cloud infrastructure for scalable, production-grade systems.

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Training & Mentoring

Corporate training, workshops, webinars and technical mentoring for teams and individuals.

Services & Expertise

From strategy to implementation โ€” I help you build the right thing, the right way

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Software Consulting

Architecture review, technology selection, and strategic guidance for complex software systems and digital products.

  • System architecture design
  • Technology stack assessment
  • Code review & quality audit
  • Scalability & performance planning
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Full Stack Development

End-to-end web applications built across MERN, LAMP, Python and Java stacks โ€” from rapid MVPs to enterprise-scale systems.

  • MERN ยท LAMP ยท Python (Flask / FastAPI)
  • REST & GraphQL API development
  • Database design, optimisation & migration
  • Security, performance & code quality
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Cloud & Data Engineering

Robust data infrastructure, cloud deployments, and integration pipelines for modern enterprise data needs.

  • AWS S3 & Secrets Manager
  • Kubernetes & containerisation
  • Snowflake & data warehousing
  • ETL & data pipelines
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Mobile Development

Native and cross-platform mobile applications for Android and iOS with seamless user experiences.

  • Android & iOS development
  • Flutter & cross-platform
  • API integration
  • Mobile UI/UX
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Training & Workshops

Corporate training, technical workshops and webinars for individuals and teams on modern software and AI topics.

  • Hands-on technical workshops
  • Live webinars & online sessions
  • Team upskilling programmes
  • Custom training material

Work Experience

15+ years building, consulting, and leading across technology domains

Now

Senior Full Stack Developer

Toptal ยท Confidential Enterprise Client

2025 ยท Present

Engaged through Toptal's expert network as a Senior Developer on a large-scale enterprise application, working within a cross-functional engineering team.

  • Building and maintaining full-stack features across the MERN stack
  • Designing and managing data processing and integration pipelines
  • Implementing Snowflake for enterprise data storage, querying and analytics
  • Deploying and managing containerised applications with Kubernetes on AWS
  • Redis for caching, session management and application performance
  • AWS S3 for secure file storage and Secrets Manager for credentials management
MERN Snowflake Kubernetes Redis AWS Data Pipelines

AI Trainer ยท Prompt Engineer ยท LLM Evaluator

Turing ยท Client: OpenAI

2024 โ€“ 2025

Contributed to AI model training and quality evaluation for OpenAI through Turing's expert network, across diverse NLP and code generation tasks.

  • Evaluated and compared 5,000+ model completions for accuracy, reasoning and safety
  • Authored 300+ edge-case test cases to validate LLM performance across NLP tasks
  • Identified reasoning flaws and factual inaccuracies in AI-generated outputs
  • Wrote optimal algorithmic solutions for 100+ coding problems to guide LLM training
  • Contributed to multi-campaign evaluations requiring varied prompt structures
OpenAI Prompt Engineering LLM Evaluation Python NLP Data Annotation

Full Stack Developer & AI Consultant

Toptal ยท Vetto AI & Other Clients

2022 โ€“ 2024

Multiple client engagements through Toptal spanning full-stack development, generative AI and technical consulting โ€” clients included Vetto AI, MentorsWithoutBorders and Quinde Foundation.

  • Designed, tested and refined prompts for generative AI products at Vetto AI
  • Evaluated AI-generated responses for coherence, correctness and safety
  • Full-stack development and consulting for non-profit and education clients
  • Code review of MERN stack applications and data analysis projects (Jupyter Notebooks)
Generative AI Prompt Engineering Full Stack MERN Python Data Science

Technical Director

RVS Educational Trust's Group of Institutions

2022 โ€“ 2023

Led the institution's technical operations, overseeing 35+ people across four departments and driving digital transformation and academic innovation.

  • Managed Digital Marketing, Software, Data Science and Networks teams
  • Spearheaded technology adoption and e-learning platform development
  • Aligned cross-functional team goals with institutional strategy and growth
  • Oversaw technical infrastructure, software projects and digital outreach
Technical Leadership Team Management Digital Transformation 35+ People

Corporate Trainer โ€“ Technical & Senior Developer

RVS Group of Institutions

2015 โ€“ 2022 ยท 7 Years

Delivered technical training across software and AI domains while building web and mobile products and leading development projects for the institution.

  • Conducted corporate training on full-stack development, data science and AI
  • Built and maintained applications across LAMP, MERN, Android and Java stacks
  • Managed GitHub Education initiatives and e-learning platform development
  • Spoke at GitHub Constellation India 2022 and GitHub Workshop โ€“ Goa University 2019
Corporate Training Full Stack LAMP Android Data Science GitHub Education

Networks Lead & Assistant Professor

Karpagam Institutions ยท Coimbatore

2010 โ€“ 2015

Academic and technical roles at Karpagam University and Karpagam College of Engineering โ€” teaching, training and leading technical initiatives.

  • Taught C, C++, Data Structures, Algorithms and Computer Networks
  • Led the Networks Team at Karpagam College of Engineering
  • Co-ordinated Infosys Campus Connect, E-Learning and Automation programmes
C / C++ Algorithms Computer Networks Academic Leadership

Skills & Technologies

A broad and deep technical toolkit built over 15+ years

โš›๏ธ Full Stack Development

React.js Node.js Express.js MongoDB JavaScript PHP Flask FastAPI Spring Boot REST APIs GraphQL HTML5 / CSS3

โ˜๏ธ Cloud & DevOps

AWS Google Cloud (GCP) Microsoft Azure Digital Ocean Firebase Kubernetes Docker Git & GitHub CI/CD Netlify ยท Render

๐Ÿ—„๏ธ Databases & Data Engineering

MongoDB MySQL PostgreSQL Snowflake Redis Firebase Firestore Data Pipelines ETL

๐Ÿค– AI & Data Science

Prompt Engineering LLM Evaluation Generative AI Machine Learning Deep Learning NLP TensorFlow / Keras scikit-learn Pandas ยท NumPy R (tidyverse) Jupyter Notebooks

๐Ÿ“ฑ Mobile Development

Android (Java) iOS (Swift) Flutter (Dart) API Integration Mobile UI/UX

๐Ÿ’ป Programming Languages

JavaScript Python Java PHP C C++ R

Let's Work Together

Have a project in mind? Looking for consulting, development, AI solutions or training? Let's talk.

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Location

India  ยท  Available Worldwide (Remote)

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Book a Call

Available for consulting engagements and training programmes

๐Ÿ’ผ Consulting

Architecture, advisory and project consulting

๐Ÿ‘จโ€๐Ÿ’ป Development

Full-stack, mobile and AI development projects

๐ŸŽ“ Training

Corporate workshops, webinars and mentoring