Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I’m a versatile engineering leader with 10+ years of experience building full-stack systems, backend platforms, and AI-powered applications across startups and enterprises. I specialize in taking products from 0 → 1, scaling architecture and teams, and integrating AI/LLM capabilities into real-world systems. I’m open to roles as a Senior or Principal Software Engineer, Founding Engineer, AI/ML Engineer, or Fractional CTO, where I can combine deep technical execution with product-minded leadership.…I’m a versatile engineering leader with 10+ years of experience building full-stack systems, backend platforms, and AI-powered applications across startups and enterprises. I specialize in taking products from 0 → 1, scaling architecture and teams, and integrating AI/LLM capabilities into real-world systems. I’m open to roles as a Senior or Principal Software Engineer, Founding Engineer, AI/ML Engineer, or Fractional CTO, where I can combine deep technical execution with product-minded leadership.

Randy Ramnansingh

AI Engineer, Full Stack Developer, Data Scientist, +4





I’m a versatile engineering leader with 10+ years of experience building full-stack systems, backend platforms, and AI-powered applications across startups and enterprises. I specialize in taking products from 0 → 1, scaling architecture and teams, and integrating AI/LLM capabilities into real-world systems. I’m open to roles as a Senior or Principal Software Engineer, Founding Engineer, AI/ML Engineer, or Fractional CTO, where I can combine deep technical execution with product-minded leadership.…I’m a versatile engineering leader with 10+ years of experience building full-stack systems, backend platforms, and AI-powered applications across startups and enterprises. I specialize in taking products from 0 → 1, scaling architecture and teams, and integrating AI/LLM capabilities into real-world systems. I’m open to roles as a Senior or Principal Software Engineer, Founding Engineer, AI/ML Engineer, or Fractional CTO, where I can combine deep technical execution with product-minded leadership.

Available to hire

I’m a versatile engineering leader with 10+ years of experience building full-stack systems, backend platforms, and AI-powered applications across startups and enterprises. I specialize in taking products from 0 → 1, scaling architecture and teams, and integrating AI/LLM capabilities into real-world systems.

I’m open to roles as a Senior or Principal Software Engineer, Founding Engineer, AI/ML Engineer, or Fractional CTO, where I can combine deep technical execution with product-minded leadership.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

Javanese

Advanced

English

Fluent

Aragonese

Advanced

Work Experience

AI Senior Software Engineer at Langan Engineering

October 1, 2025 - October 25, 2025

Led the development of ESA Copilot, an internal AI-powered assistant to accelerate Phase I Environmental Site Assessments by extracting insights from historical documents and auto-generating report sections. Architected an LLM-powered pipeline using GPT-4o to analyze scanned PDFs, environmental datasets, maps, and regulatory records; implemented custom document parsing, CV-based analysis, and retrieval-augmented generation (RAG) with guardrails and audit-ready outputs; built a browser UI (React/Node.js) for testing prompts, previewing reports, and inline editing.

AI Senior Software Engineer at Global EdTech Company

June 1, 2025 - October 25, 2025

Architected and built scalable backend services in a modern monorepo using Go, TypeScript, and Node.js. Designed Libra Engine, an LLM-integrated hybrid semantic/keyword search using embeddings from OpenAI/HuggingFace, Pinecone for vector search, and Meilisearch for full-text indexing. Implemented a Graph-RAG architecture to ground GPT-4o responses in contextual data, and developed prompt frameworks with fallback chains and audit-ready outputs. Collaborated with frontend, product, and AI/ML teams to ship user-facing features.

Senior Software Engineer at Instacart

October 1, 2024 - October 25, 2025

Designed backend services for 3PI platform enabling retailer loyalty/incentives integration; implemented customized SMS notifications and webhooks; built API-first services for retailer storefront customization; collaborated with frontend teams to ensure API alignment and reliability.

Software Engineer & Architect at Endeavor Co

April 1, 2024 - October 25, 2025

Designed GEM (Guest Experience Manager), an internal platform for events/guest experiences. Built a GraphQL API aggregating data across multiple platforms, enabling real-time access to information. Used TypeScript, Next.js, and PostgreSQL to deliver scalable backend and frontend capabilities, and implemented data merging/normalization to unify disparate data sources.

Backend Software Engineer at ContextLogic - Wish

June 1, 2023 - October 25, 2025

Developed a data-driven investing lead sourcing platform using a monolithic Python backend and React frontend. Built data pipelines on BigQuery and DBT in GCP to analyze investment datasets and generate actionable insights. Integrated analytics models to evaluate startups, delivering scalable, cloud-based solutions and cross-functional collaboration.

Senior Manager – Lead Software Engineer at Deloitte Risk Advisory

December 1, 2022 - October 25, 2025

Developed high-performance software using TypeScript, Node.js, and Nest.js; worked with SQL/NoSQL databases for scalable data access; emphasized API-first design, CI/CD, containerization, and observability. Collaborated with SAP S/4HANA, Salesforce Service Cloud/CRM, and other enterprise systems; defined development standards and process improvements.

Senior Lead Developer at Shopify

February 1, 2022 - October 25, 2025

Architected backend functionality for flexible, experiment-driven pricing models; delivered full-stack features on the Shopify Merchant Dashboard using Ruby on Rails, GraphQL, and React; led a team of 4 engineers in refactoring and modernizing critical components within the monolith; implemented robust CI/CD and deployed on GCP.

Senior Lead Technical Consultant at IBM – Global Business Services

June 1, 2021 - October 25, 2025

Led design and development of custom solutions using Java for enterprise clients; delivered integrations and customizations for core IBM offerings; conducted digital strategy workshops and system integration design; engineered service-oriented/distributed architectures across multi-cloud environments; led teams of 6–10 engineers and defined development standards for CI/CD, data security, and best practices.

AI Engineer / Full Stack Developer at Langan Engineering

October 1, 2025 - October 1, 2025

Led the development of ESA Copilot, an internal AI-powered assistant to accelerate Phase I Environmental Site Assessments by extracting insights from historical environmental documents and auto-generating report sections. Architected an LLM-powered pipeline using GPT-4o to analyze scanned PDFs, environmental datasets, maps, and regulatory records, extracting site history, contaminants, and geographic references with high precision. Implemented custom document parsing with chunking and CV-based techniques, integrated retrieval-augmented generation (RAG) flows grounding AI outputs in context from vector stores and structured data, and built a browser-based UI with React, Node.js, and Python for testing, preview, and inline editing with guardrails and audit-ready reporting.

AI Senior Software Engineer at Global EdTech Company

June 1, 2025 - June 1, 2025

Architected and built scalable backend services in a modern monorepo using Go, TypeScript, and Node.js. Delivered LLM-integrated systems including Libra Engine, a hybrid semantic and keyword search platform leveraging embeddings (OpenAI, Hugging Face), Pinecone for vector search, and Meilisearch for full-text indexing. Designed a custom Graph-RAG architecture to augment GPT-4o responses with contextual data from the graph database, enabling domain-aware, context-rich answers. Collaborated cross-functionally to ship user-facing features grounded in robust backend architecture and API-first principles.

Senior Software Engineer at Instacart

October 1, 2024 - October 1, 2024

Designed and implemented backend services for Instacart's 3PI platform, enabling seamless communication with retailers' loyalty, incentives, and rewards systems (e.g., GiveX, BRData). Implemented customized SMS notifications and webhooks to automate key events in the order lifecycle, improving customer experience and operational efficiency. Collaborated closely with frontend teams to design APIs and deliver new retailer integration features.

Software Engineer & Architect at Endeavor Co

April 1, 2024 - April 1, 2024

Designed and developed GEM (Guest Experience Manager), an internal platform for managing events and guest experiences. Architected and implemented a robust GraphQL API aggregating data from multiple platforms, enabling real-time information access across tools. Used TypeScript, Next.js, and PostgreSQL to build scalable backend and frontend solutions, implemented data merging/normalization, and defined architectural standards for API efficiency and maintainability.

Backend Software Engineer at ContextLogic - Wish

June 1, 2023 - June 1, 2023

Developed an investing lead sourcing platform for fund investors using a Python backend and React frontend. Built data pipelines on BigQuery and DBT on Google Cloud Platform to analyze investment data and generate actionable insights. Integrated data analysis models to evaluate startups across verticals and delivered scalable, cloud-based solutions with strong data integrity.

Senior Manager – Lead Software Engineer at Deloitte Risk Advisory

December 1, 2022 - December 1, 2022

Developed high-performance software solutions using TypeScript, Node.js, and Nest.js with a focus on API-first design and scalable architectures. Managed relational and NoSQL databases, containerized deployments with Docker and Kubernetes, and collaborated with SAP S/4HANA, Salesforce Service Cloud/CRM, and other enterprise systems to deliver integrated risk advisory solutions. Drove Agile/Scrum practices and mentored teams to improve development lifecycle and quality.

Senior Lead Developer at Shopify

February 1, 2022 - February 1, 2022

Architected backend functionality for flexible, experiment-driven pricing models and delivered full-stack features on the Shopify platform using Ruby on Rails, GraphQL, and React. Led a 4-engineer team in refactoring and modernizing key components of Shopify's monolith, deployed to GCP/GKE, and collaborated with product and design teams to enhance merchant operations and dashboard experiences.

Senior Lead Technical Consultant at IBM – Global Business Services

June 1, 2021 - June 1, 2021

Led design and development of custom enterprise solutions using Java across IBM product portfolios. Delivered integrations and customizations, conducted digital strategy workshops, and architected service-oriented and distributed applications for multi-cloud deployments. Managed teams of 6–10 engineers, led API design (SOAP/REST), and defined development standards for CI/CD, security, and best practices.

Senior AI/Software Engineer at Langan Engineering

October 1, 2025 - October 1, 2025

Led development of ESA Copilot, an internal AI-powered assistant for Phase I Environmental Site Assessments. Built LLM-powered pipelines using GPT-4o to analyze scanned PDFs, environmental datasets, maps, and regulatory records; extracted site history, contaminants, and geographic references with high precision. Implemented custom document parsing and chunking pipelines, integrated CV-based image analysis, and robust retrieval-augmented generation with vector stores and structured data. Engineered prompt frameworks and fallback chains with guardrails to ensure audit-ready report generation. Delivered full-stack features including a browser-based UI for prompt testing and report editing.

Senior AI/Software Engineer at Global Edtech Company

June 1, 2025 - June 1, 2025

Architected and built scalable backend services in a Go/TypeScript/Node.js monorepo, powering core functionality. Implemented LLM-integrated Libra Engine – a hybrid semantic and keyword search leveraging embeddings (OpenAI, Hugging Face), Pinecone for vector search, and Meilisearch for full-text indexing. Built a custom Graph-RAG architecture to ground GPT-4o responses in contextual data; collaborated cross-functionally to ship user-facing features with API-first design.