Backend Systems · API Platforms · AI Products
Ambar Kashyap
Engineering Leader
Solution Architect
Forward Deployed Engineer
Building scalable systems at BT Group, shipping AI products on the side, and writing about what actually works.
14+
Years
11
Projects Built
Who I am

Seasoned Engineering Leader with 14+ years building high-impact backend systems and leading cross-functional teams across telecom, SaaS, EdTech, and healthcare.
I build API-first platforms and design scalable microservices architectures. Hands-on with Java and Spring Boot, with deep focus on cloud-native delivery and product-aligned engineering.
Currently leading API orchestration for the EE app at BT Group, serving millions of users with real-time event processing and personalized recommendations.
Danton — ask this site anything
An AI assistant I built to answer questions about my work. It answers only from my actual career history — and says so when it doesn’t know.
Ask DantonWhere I've been
What I've built
Things I build to stay sharp — mostly applied AI, distributed systems, and developer tooling. Every one of these started as a question I wanted answered.
EE App API Orchestration
Personalized Recommendations Platform
Orchestration layer fronting the EE app's recommendation surfaces. Splits read and write paths across Kafka-backed event streams so personalization can be recomputed asynchronously without blocking the request path, with Redis fronting the hot recommendation set.
Reduced p99 latency by 25% on critical APIs and sustained 99.9% availability through Dynatrace and ELK-based observability.
iFlight Neo — Crew Roster Platform
Rostering for Global Airline Crew Management
Architectural lead for the Roster Calendar and Roster History components. Defined service boundaries and an audit-trail architecture that tracks every change across flight pairings and crew duties, so roster state stays reconstructable at any point in time.
Modularized airline-specific configuration into separable services and led performance tuning across the rostering path.
LMS Platform
Four-App Learning and Proctoring System
Owned architecture and stack selection for a learning platform built under aggressive MVP timelines, modelling the domain across four applications — CRM, Educator Portal, Learner App and a proctored exam platform — around a shared identity and assessment core.
Integrated AWS Rekognition for identity verification and live exam auto-proctoring.
Oracle Hyperion FDMEE Integrations
Enterprise Financial Data Pipelines
Direct Load APIs and ingestion pipelines for enterprise financial data management, with concurrency controls around batch load windows to keep ingestion reliable under contention.
Medicaid Enterprise System
Worker Portal & FAST4J ORM
Built the Worker Portal module processing eligibility determinations for state Medicaid systems, and grew into the subject-matter expert for FAST4J, Deloitte's proprietary ORM framework, supporting teams across the practice on its data-access patterns.
Playhood
Sports OS for Gated Communities
PWA exploring invite-link distribution as an alternative to app-store installs — no download, state resumes from the link. Ball-by-ball scoring pushes over a real-time channel to every spectator, and AI banter generation runs a primary model with an automatic fallback so commentary degrades gracefully rather than failing.
Covers tournament management and an honours board on the same real-time store. Built at VibeCon 2026.
Flow Explainer Studio
Sequence Diagrams as Interactive Walkthroughs
Single-file browser tool that parses Mermaid, PlantUML and draw.io sequence diagrams into an intermediate step model, then replays them as animated step-by-step walkthroughs. Zero build step and no runtime dependencies — the whole tool is one HTML file so it can be shared into any review or demo.
Built to make API architecture reviews legible without walking an audience through a static diagram.
Also building
- KMCare — OPD management for clinics — registration, appointments, EMR and prescriptions, modelled as an explicit domain aggregate.
- KMCricket — Cross-platform cricket scoring with real-time match events and player stats over a WebSocket channel.
What I work with
Architecture & Design
Backend
Cloud & DevOps
Frontend
Tools & Data
Awards & credentials
Recognition
Certifications
Education
B.E. Telecommunications Engineering
PES University · 2008 — 2012
Teaching what I learn
Long-form breakdowns of distributed systems and applied AI — written to force my own understanding into something explainable. Also on YouTube as Builder Sensei.
The Evolution of Distributed Systems Communication
From SOAP to AI-Native Protocols
Feb 1, 2026 · 13 minThe Database Menu, Part 1: The Filing Cabinet
Why Relational Databases Are Still Your Best First Choice
Feb 1, 2026 · 8 minKaviCare: Designing a Chat-First AI System for Longitudinal Healthcare Memory
A case study in voice-first, safety-bounded GenAI for real-world healthcare
Jan 15, 2026 · 3 min