Engineering Impact

ENGINEERING
SYSTEMS THAT
SCALE BEYOND MVP

From startup MVPs to enterprise connected-device ecosystems — case studies, engineering frameworks, and architectural proof of depth.

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Experience

ENGINEERING EXPERIENCE
ACROSS DOMAINS

Startup MVP Delivery

Full-stack MVPs for founders from concept to Google Play — independently, with full architecture ownership.

Enterprise Connected Systems

Contributed to automotive-grade connected-device communication systems at enterprise scale.

Healthcare Platforms

Secure, HIPAA-adjacent healthcare applications with offline-first architecture and encrypted workflows.

AI-Powered Experiences

LLMs, voice interfaces, and intelligent automation integrated into production mobile applications.

Google Play Product Delivery

End-to-end delivery from architecture to Play Store release across multiple product categories.

Client Case Studies

REAL ENGINEERING.
REAL OUTCOMES.

Client confidentiality is maintained. Technical depth is not.

Connected Hardware

Delivered

BLE-Connected Device Ecosystem

Challenge

Device onboarding failures and BLE connection drops were causing high support volume and poor user retention.

Outcome

Reduced connection failure rate through state-machine BLE architecture with adaptive retry, MTU negotiation, and lifecycle-aware session management.

Technical Detail

Custom fragmentation/reassembly protocol over GATT with CRC integrity and anti-MITM security layer. State machine handles 12 distinct connection states.

BLE Protocol EngineeringConnected SystemsArchitecture

Healthcare

Delivered

Healthcare Mobile Platform

Challenge

Fragile authentication flows and offline-sync failures were blocking clinical staff in low-connectivity environments.

Outcome

Redesigned authentication layer with deterministic offline-first sync, conflict resolution, and AES-256 encrypted local storage.

Technical Detail

Biometric + token-refresh auth stack. Offline queue via WorkManager, delta-sync over Room. Zero data loss on 72-hour offline periods in testing.

Android ArchitectureSecurityOffline Systems

Education Technology

Delivered

Educational Learning Platform

Challenge

Content delivery failed completely in poor-connectivity regions, blocking the core learning experience for 80% of users.

Outcome

Offline-first content architecture delivering 50K+ educational assets with background sync, progress tracking, and adaptive caching.

Technical Detail

Paged offline content store with LRU eviction, WorkManager background sync with exponential backoff. 95%+ cache hit rate in target environments.

Offline-First SystemsAndroid EngineeringContent Delivery

Startup

Delivered

Startup MVP — Concept to Launch

Challenge

Technical co-founder needed: product strategy, architecture, and full delivery under 4 months with constrained budget.

Outcome

Production-ready MVP delivered independently from discovery through Google Play release, including architecture, CI/CD, and product documentation.

Technical Detail

Clean MVVM + Hilt DI + Compose UI. Modular from day one. Automated testing pipeline on GitHub Actions. Architecture decision log for handover.

Product EngineeringMVP ArchitectureMobile Development

Engineering Assets & Frameworks

FRAMEWORKS BUILT FROM
REAL CHALLENGES

Most agencies have projects. TEJVON has projects and reusable engineering infrastructure — built because production demanded it.

Active Development

TEJVON BLE Core

Production-grade BLE communication framework for Android.

State-machine-driven BLE session management with reconnection logic, MTU optimization, command queuing, and lifecycle awareness. Built from real-world automotive connected product challenges.

View on GitHub

Features

State Machine Architecture

Adaptive Reconnection Logic

MTU Management & Optimization

Command Queue with Priority

Lifecycle-Aware Sessions

Anti-MITM Security Layer

Active Development

TEJVON Download Manager

Production-grade Android download infrastructure.

Reliable background download system with pause/resume, intelligent retry policies, queue management, and network-aware scheduling. Powers large content delivery in offline-first applications.

View on GitHub

Features

Pause / Resume Downloads

Configurable Retry Policies

Priority Queue Management

Background Download Service

Network State Monitoring

Progress Persistence

Roadmap

TEJVON OTA Engine

Firmware update infrastructure for connected devices.

End-to-end OTA update pipeline with chunk-based transfer, validation, progress tracking, and rollback support. Designed for low-bandwidth BLE environments and constrained device memory.

View on GitHub

Features

Chunk-Based Transfer Protocol

CRC Integrity Validation

Progress Tracking & Resume

Rollback on Failure

Multi-Device Queue

Update History Logging

Client Feedback

WHAT CLIENTS
SAY AFTER DELIVERY

We spent 6 months fighting BLE connection drops. Surendra rebuilt our entire connection layer in three weeks — state machine, reconnection logic, the lot. Our app store rating went from 3.1 to 4.3 in 60 days. The problem is gone.

Arjun M.

CTO · Connected Health Wearable Startup

The offline-first architecture built for our clinical platform works in facilities with zero connectivity. That was our #1 product complaint for two years. It's now our #1 sales differentiator.

Priya N.

Founder · Healthcare Platform

TEJVON delivered our complete MVP in 11 weeks — architecture, build, CI/CD, and Play Store release. The codebase was clean enough that our next engineer was productive on day one without handholding.

Vikram S.

Co-Founder · EdTech Startup

Surendra challenged every assumption I had about the architecture. Almost all of them were wrong. That honesty saved us from a complete rewrite at month six. The Discovery Sprint was worth 10x its cost.

Rohan D.

Founder · B2B SaaS Startup

The architecture review identified three critical scalability problems we'd have hit in 90 days. We fixed all three before they became fires. Best ₹50,000 we spent that year.

Karan P.

VP Engineering · Mobile-First Product Company

Engineering Philosophy

HOW WE THINK
ABOUT ENGINEERING

Reliability First

Products don't fail because of missing features — they fail because of instability. Every system is designed for production durability before feature completeness.