Available · India

Production systems for web, mobile, and backend.

I'm Tekeshwar Singh — a Senior Software Engineer with 5+ years shipping full-stack products. Payments infrastructure, AI search pipelines, multi-tenant SaaS, and offline-first mobile apps.

Currently at xFarm Technologies, building Flutter apps for a farm management platform serving 600,000+ farms across 14M+ hectares. Previously Breakthrough (Stripe billing on AWS ECS, AI semantic search on Vertex AI, Next.js paywall serving 60+ brands), PixelApps, and Pingolearn.

On the side I ship open source — most recently pglens, a PostgreSQL viewer, and Wallbay, a Flutter wallpaper app with 114+ GitHub stars.

Find me on GitHub, LinkedIn, X, or email tekeshwarsingh2000@gmail.com.

What I focus on

focus

Backend

Production-grade

Multi-tenant SaaS, payments infra, event-driven pipelines. Built on AWS ECS, GCP, Firebase.

Mobile

Cross-platform

Flutter apps for fleets, farms, wellness. Offline-first, Clean Architecture, Riverpod / MobX.

Ship the pipeline

Vector embeddings, semantic search, Gemini reranking. Real-time indexing on Firestore + BigQuery.

Experience — where I've shipped

experience

#01April 2026 – PresentItaly (Remote)

Senior Software Engineer

xFarm Technologies

Mobile team engineer at xFarm, a comprehensive farm management platform serving 600,000+ farms across 14M+ hectares. Building cross-platform Flutter apps for field management, machinery tracking, and sensor integration.

FlutterDartMobXExplicit ArchitectureMelosSpotify Model

#02July 2023 – April 2026New York, NY (Remote)

Senior Software Engineer

Breakthrough

Owned the backend platform powering a white-label wellness app used by 130+ partner creators and 60+ web paywall deployments across Firebase, AWS, and GCP.

Built the AI media indexing and semantic search integration powering in-app content discovery — Firestore-triggered indexing pipeline, BigQuery deduplication, and a Gemini-reranked vector search endpoint serving the mobile apps in real time.
Built a multi-tenant Stripe billing backend on AWS ECS (Express, TypeScript, Prisma, Postgres) with webhook processing offloaded to Lambda via SQS FIFO, supporting subscriptions, lifetime purchases, and gifting across multiple Stripe Connected Accounts.
Shipped an AI Smart Search pipeline on EC2 — transcription via ElevenLabs, vector embeddings via Vertex AI, and per-partner system instructions generated through a multi-step Gemini pipeline.
Built a Next.js Stripe Web Paywall serving 60+ partner brands from one codebase, integrating Stripe Elements, Apple Pay, Google Pay, and RevenueCat.
Built internal tooling (Firebase automation CLI, bulk media uploader) that turned hours of manual partner-onboarding work into single commands.

FlutterNode.jsExpress.jsTypeScriptPrismaPostgreSQLGCPAWSFirebaseStripe APIDocker

View all experience →

Selected work — key projects

work

#001professional

AI Media Indexing & Semantic Search

Firestore-triggered indexing pipeline, BigQuery deduplication, and Gemini-reranked vector search endpoint powering in-app content discovery for 130+ partner creators.

impact · Real-time content discovery across mobile apps.

FirebaseBigQueryGeminiVector EmbeddingsSemantic SearchServerless Functions

#002professional

AI Smart Search Pipeline

EC2-based pipeline with ElevenLabs transcription, Vertex AI vector embeddings, and per-partner system instructions generated through multi-step Gemini pipeline.

impact · AI-powered semantic search across partner content.

EC2ElevenLabsVertex AIGeminiNode.jsTypeScript

#003professional

Multi-Tenant Stripe Billing Backend

AWS ECS-hosted billing backend with webhook processing via SQS FIFO. Supports subscriptions, lifetime purchases, and gifting across multiple Stripe Connected Accounts.

impact · Processes payments for 60+ web paywall deployments.

AWS ECSExpress.jsTypeScriptPrismaPostgreSQLAWS SQS FIFOStripe Connect

View all projects →