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Hi, I'm Mathews Shaji

Backend-leaning full-stack developer with production-grade SaaS and cloud-native architecture experience. Specialised in robust APIs, modular multi-cloud data pipelines, AI/LLM integrations (OpenAI, Amazon Bedrock, LangChain), and highly scalable React/Next.js interfaces.

Explore Work Contact Me
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10+
Projects Shipped
3+
Years Experience
3
Clouds — AWS · GCP · Azure
100%
Production Grade
// 01 — Experience

Professional Journey

Engineering high-performance SaaS platforms, distributed workloads, and warehouse automations.

// 01 — Experience

Professional Journey

Engineering high-performance SaaS platforms, distributed workloads, and warehouse automations.

Dec 2025
Full-Stack Dev (Contract)
Thoughtroutes · Dubai CDA
2024
Contract Full-Stack Dev
Exotic Green · Austria
Nov 2023 — Present
Full-Stack Developer
Thoughtroutes · CloudPositive
2024 — Present
Observability Engineer
Thoughtroutes · Clients
Jun 2023 — Nov 2023
Full-Stack Developer
Xmigrate
May 2023 — Jun 2023
Web Developer Intern
Xmigrate

"Built and deployed the official CDA platform (dcsl.cda.gov.ae) that earned a Guinness World Record for highest online member participation."

Full-Stack Developer (Contract)
Thoughtroutes · CDA, Dubai Government Dec 2025 Remote · Contract
  • Built and deployed the official CDA platform (dcsl.cda.gov.ae) that earned a Guinness World Record for highest online member participation.
  • Developed and Dockerised Next.js 15 app with multi-stage builds for Azure; implemented full i18n (English/Arabic RTL), passwordless magic-link auth, and PostgreSQL schema with audit logging.
Next.jsPostgreSQL SendGridreCAPTCHA v2 Headless ChromeAzure Docker

“Sole developer for a full-stack warehouse management system, executing a full-stack migration across multiple phases.”

Contract Full-Stack Developer
Exotic Green — Austria 2024 Remote · Part-time Contract
  • Designed and built a full warehouse management system, executing a full-stack migration across multiple phases.
  • Phase 1: Developed a FastAPI backend (SQLAlchemy, Alembic, JWT) with AWS Cognito, and a Next.js 14 frontend using NextAuth v5 (beta) and Google Sign-On.
  • Phase 2: Added webcam barcode scanning integration via ZXing-JS, Zod schema validation, and redesigned UI with React & shadcn.
  • Frappe Migration: Led transition of the entire codebase to the Frappe framework, deploying with Neon DB (Serverless Postgres), Redis, Nginx, and Frappe's native cookie-based authentication.
FrappeFastAPI Next.js 14-16Neon DB RedisAWS Cognito NginxZod ZXing-JS

“Owned the entire backend of a multi-cloud cost governance SaaS — 20+ ingestion pipelines, secretless onboarding across AWS, GCP, and Azure, and an AI cost-estimation/prediction tool.”

Full-Stack Developer NOW
Thoughtroutes · CloudPositive Nov 2023 – Present Remote · Full-time
  • Architected multi-tenant FastAPI backend with dynamic per-tenant MySQL schema isolation and role-specific dashboards for finance, BU leader, and executive personas.
  • Designed and built a data ingestion engine with 20+ modular pipelines covering AWS (Cost Explorer, Trusted Advisor, Compute Optimiser), GCP (BigQuery billing export), and Azure Cost Management, orchestrated via AWS SQS.
  • Engineered secretless multi-cloud onboarding across all three clouds: AWS (IAM roles, no stored credentials), GCP (service account BigQuery billing export with minimal IAM), and Azure (multi-tenant app registration with admin consent flow — generates a service principal in the client tenant, used in an ARM template to provision necessary resources for cost data access).
  • Built multi-cloud account validation service — AWS checks, GCP BigQuery, and Azure (RBAC, Cost Management, Blob) — deployed with Docker and Terraform.
  • Developed real-time alerting module with OpenSearch monitors, configurable thresholds, and webhook notification channels.
  • Implemented GCP pre-onboarding validator verifying BigQuery billing export access across projects; deployed on Kubernetes with Helm chart.
  • Built proof-of-concept AI cost estimation API using OpenAI GPT-4o-mini with structured JSON output and a multi-step pipeline (QueryParser → ParameterValidator → PromptEnhancer → OutputValidator).
  • Deployed microservices on AWS ECS with RDS MySQL, SQS, and OpenSearch integration; authored provisioning scripts and Ansible playbooks.
  • Managed server infrastructure (AWS EC2 & GCP Compute Engine) using Auto Scaling Groups, Grafana, Loki, and Prometheus.
FastAPISQLAlchemy AWS (ECS/RDS/Cognito/Lambda/SQS/Athena/OpenSearch) GCP (BigQuery/IAM/GKE)Azure (Cost Mgmt/ARM) MySQLDocker TerraformKubernetes/Helm OpenAIGrafana/Loki/Prometheus

"Managing end-to-end observability for multiple client environments — Prometheus alerting, Grafana dashboards, Loki log aggregation, and Beyla eBPF auto-instrumentation."

Infrastructure / Observability Engineer
Thoughtroutes · Client Deployments 2024 – Present Remote · Full-time
  • Managing end-to-end observability for multiple client environments: Prometheus alerting, Grafana dashboards, Loki log aggregation, and Beyla eBPF auto-instrumentation (zero-code overhead).
  • Configured Nginx reverse proxy, SSL termination, and load balancing; maintained Node Exporter host-level metrics (CPU, memory, disk, network).
PrometheusGrafana LokiBeyla (eBPF) Node ExporterNginx Linux

“Contributed to a live VM migration SaaS — FastAPI backend (27+ modules), Keycloak SSO, React Flow topology dashboards, and a polished PDF-invoicing frontend deployed on Cloudflare.”

Full-Stack Developer
Xmigrate Jun 2023 – Nov 2023 Remote
  • FastAPI backend: org/project/blueprint management, target cloud config (AWS/Azure/GCP/OCI), agent registration, action lifecycle, billing modules.
  • Keycloak IAM: OAuth2/OIDC flows, SSO, custom themes, token exchange, PostgreSQL backend.
  • Next.js 14 dashboard with React Flow topology diagrams, ApexCharts/Chart.js visualisations, and Keycloak SSO integration.
  • Built polished SaaS frontend with Radix UI, TanStack Table, Framer Motion animations, and PDF invoice generation via react-pdf; deployed on Cloudflare.
  • Validated and tested live VM migration workflows end-to-end across cloud environments.
PythonFastAPI Next.js 14TypeScript KeycloakPostgreSQL React FlowRadix UI TanStackFramer Motion Cloudflare

“First production code shipped. Built REST endpoints, mapped relational data models, and assisted API-frontend integration testing.”

Web Developer Intern
Xmigrate May 2023 – Jun 2023 Remote · Internship
  • Developed FastAPI endpoints for the cloud migration backend, mapped relational data models.
  • Contributed to API–frontend integration and end-to-end data flow validation.
PythonFastAPI REST APIGit
  • Built and deployed the official CDA platform (dcsl.cda.gov.ae) that earned a Guinness World Record for highest online member participation.
  • Developed and Dockerised Next.js 15 app with multi-stage builds for Azure; implemented full i18n (English/Arabic RTL), passwordless magic-link auth, and PostgreSQL schema with audit logging.
Next.js 15PostgreSQL DockerAzure SendGridreCAPTCHA
  • Designed and built a warehouse WMS, executing full-stack migration across multiple phases.
  • FastAPI and Next.js 14 stack with barcode scanner (ZXing-JS) and Zod validation.
  • Rewrote entire codebase to Frappe, deploying on Neon DB (serverless Postgres), Redis, and Nginx.
FrappeFastAPI Next.js 16Neon DB RedisNginx
  • Multi-tenant FastAPI backend with per-tenant MySQL schema isolation, 20+ ingestion pipelines via SQS.
  • Secretless multi-cloud onboarding (AWS IAM roles, GCP service accounts, Azure AD app registration + ARM templates).
  • AI cost estimation using OpenAI GPT-4o-mini; deployed microservices on AWS ECS with Terraform.
FastAPIAWS SQS/ECS GCP BigQueryTerraformOpenAI
  • Prometheus alerting, Grafana dashboards, Loki log aggregation, and Beyla eBPF auto-instrumentation (zero-code overhead).
  • Configured Nginx reverse proxy, SSL termination, load balancing; maintained Node Exporter host-level metrics.
PrometheusGrafana LokiBeyla (eBPF) NginxLinux
  • FastAPI backend (27+ modules), Keycloak SSO, React Flow topology dashboards, PDF invoicing on Cloudflare.
FastAPINext.js 14 KeycloakCloudflare
  • FastAPI endpoints, relational data models, API–frontend integration.
PythonFastAPIREST API
// 02 — Selected Work

Featured Builds

A curated selection covering cloud cost governance, systems replication, sign language, and AI automation.

Multi-tenant SaaS for cost monitoring across AWS, GCP, and Azure. Per-tenant schema segregation, 20+ cost pipelines via SQS, secretless multi-cloud onboarding, and structured AI cost-estimation using GPT-4o-mini.

FastAPIReact 18 SQSOpenSearch TerraformOpenAI

Live block-level VM disk replication tool using eBPF to detect source changes. Multi-channel WebSocket Go dispatcher, lightweight C-shared migration plugins (AWS/Azure/GCP), and a Next.js 14 topology dashboard.

GoeBPF Next.js 14Keycloak WebSocketFramer Motion

Full warehouse inventory tracker for an Austrian supermarket chain. FastAPI backend with batch tracking, compliance reports, APScheduler auto-logger, and webcam barcode scanner. Next.js 14→16 rebuild with Vitest, Playwright, and Web Vitals monitoring.

FastAPINext.js 16 RedisPostgreSQL ZxingVitest

Official government platform (dcsl.cda.gov.ae) that earned a Guinness World Record for highest online member participation. Bilingual (English/Arabic RTL), passwordless auth, event/quiz management, PostgreSQL schema with audit logging, Dockerised on Azure.

Next.js 15TypeScript PostgreSQLTailwind CSS next-intlSendGrid reCAPTCHA v2Azure Docker

Serverless bot using AWS Lambda Durable Functions for tracking medicine lifecycles with state replay and zero external database. Amazon Bedrock Nova Lite parses physical prescriptions via multimodal text/image with free idempotency.

Python 3.13Durable Functions Bedrock NovaLambda Telegram API

Deep learning facial emotion classifier trained on FER2013 — 7 emotional categories. OpenCV stream routing, TensorFlow models, and a Flask analytics interactive interface.

PythonTensorFlow/Keras OpenCVFlask NumPy
// 03 — Capabilities

Technical Expertise

Proven competency map across frameworks, database engines, clouds, and core platforms.

Python — FastAPI / Flask / Django Frappe Python Framework Go — Gin / SQLX Node.js TypeScript Pandas & PyArrow Headless Chrome (PDF Gen) REST APIs Microservices WebSocket APScheduler Shell Scripting
AWS — ECS · RDS · SQS · Lambda · Cognito AWS — S3 · Athena · OpenSearch · ECR AWS — EKS · ALB · VPC · CodePipeline AWS Lambda (Durable SDK) GCP — BigQuery · GKE · IAM Azure ARM / Multi-tenant App Reg Docker & Compose Terraform & Terragrunt Kubernetes & Helm Ansible GitHub Actions Grafana / Loki / Prometheus Beyla (eBPF Auto-instrumentation) Cloudflare Pages Nginx
PostgreSQL Neon DB (Serverless Postgres) MySQL / SQLAlchemy OpenSearch MongoDB Redis DynamoDB SQLite Multi-tenant Schema Isolation Row-Level Security
Next.js 14 / 15 / 16 React.js Tailwind CSS / shadcn/ui Radix UI MUI (Material UI) TanStack Table React Flow Framer Motion Zod Validation ZXing-JS (Barcode Scan) OAuth2 / OIDC / JWT AWS Cognito OAuth Keycloak Identity Secretless Architecture
OpenAI SDK — GPT-4o Amazon Bedrock — Nova Lite TensorFlow / Keras OpenCV Vision LangChain (learning) Stable Diffusion (learning) Multimodal (text + image) Structured JSON Output
Multi-tenant RBAC Azure AD Admin Consent reCAPTCHA v2 Soft-delete & Audit Logging Vitest Unit Testing Playwright E2E Web Vitals (LCP/CLS/FID) Git & Linux Jenkins
// 04 — Connect
Available for contracts & full-time roles

Have an idea? Let's build what's next.

Ready to architect your backend systems, microservices, and cloud integrations. Open to contracts, full-time roles, and consulting worldwide.

// Direct channels
Location
Kochi, Kerala, India
// Availability
Open to full-time remote roles
Available for contract projects
Consulting & architecture review
Timezone: IST (UTC +5:30)  ·  Response within 24 h
// Stack fit
FastAPI Go Next.js AWS GCP Azure Terraform Kubernetes OpenAI Bedrock
// Socials