Most businesses waste thousands hiring separate web developers, mobile devs, trackers, and automation guys who don't know how to talk to each other. I handle the entire ecosystem.
If you are a growing brand, you face a common bottleneck: your Shopify store doesn't talk to your mobile app, your Google Ads aren't tracking conversions accurately through Google Tag Manager, and your team is wasting hours on manual data entry that should be automated.
I am an E-Commerce & Mobile Systems Architect. I build high-performance digital products (Web + Native Mobile), implement iron-clad data tracking, and construct seamless backend automations to scale your business operations.
🌐 1. Development (Web & Native Mobile)
I build fast, beautiful, and secure front-end experiences across both web and mobile, ensuring your brand is accessible wherever your customers are.
Web & E-Commerce: Custom Shopify store development, theme customization, and liquid optimization built to convert.
Mobile App Development: Native iOS (Swift) and Android (Kotlin) mobile applications built from scratch, including complex integrations like Google Maps APIs.
📊 2. Growth & Tracking (Google Ads & Analytics)
Building a great app or site is useless if you can't track where your revenue is coming from. I turn data into a growth engine.
Precision Tracking: Advanced Google Tag Manager (GTM) setups—both web and server-side—to bypass ad blockers and cookie restrictions.
Data & Optimization: Accurate GA4 funnel configuration and deep Google Ads integration so your advertising campaigns optimize flawlessly based on real, un-duplicated conversion data.
⚙️ 3. The Glue (API Integrations & Automation)
I connect your web store, mobile apps, and ad platforms straight to your internal databases and operations tools so your business runs on autopilot.
Workflow Automation: Advanced multi-step scenarios using Make, n8n, and Zapier.
Custom Extensibility: Writing custom API bridges and Google Apps Script to link tools that don't have native integrations.
🛠️ My Mastered Tech Stack:
Mobile & Web: iOS (Swift), Android (Kotlin), Shopify Liquid, JavaScript, Maps API.
Data & Traffic: Google Ads, Google Tag Manager (Web/Server-Side), GA4, Facebook CAPI.
Automation & Ops: Make, n8n, Zapier, Webhooks, Google Apps Script, REST/GraphQL APIs.
👥 Why Elite Clients Choose Me:
I don’t just take orders or write code in a vacuum. I look at your business holistically. When we work together, I make sure your apps run fast, your Google Ads are getting clean data to scale your ROI, and your team never does manual data entry again.
Ready to stop managing multiple freelancers and build a unified digital ecosystem? Click the "Invite to Job" button, and let's jump on a strategy call.
Shopify
Shopify Apps
iOS Development
Android App Development
Mobile App Development
Shopify Development
Shopify Plus
Liquid
WordPress e-Commerce
Shopify Dropshipping
Google Tag Manager
Google Analytics
Site Tracking Evaluation
Conversion Rate Optimization
Google Ads
Make.com
n8n
Zapier
API Integration
Apps Script API
Rohit J.
Pune, India
$60/hr
5.0
31 jobs
I help SaaS founders ship production-grade AI — RAG, agents, document intelligence, LLMOps — backed by 17+ years of distributed systems engineering. My AI work carries the same reliability, testing, and observability standards as traditional enterprise software.
Recent: shipped 5 open-source production AI systems — RAG, agents, document intelligence, LLMOps, and AI code review — each with detailed case studies and quantitative results.
I work best with Series A–C SaaS teams who need to add AI features or modernize their backend without a full rewrite.
💡 WHAT I BUILD
📚 RAG Systems — Production multi-tenant document Q&A
🔹 Hybrid retrieval: dense + BM25 + Reciprocal Rank Fusion
🔹 Semantic chunking, Cohere cross-encoder reranking
🔹 RAGAS evaluation in CI; 56-question suite across 5 categories
🔹 Verified tenant isolation — zero cross-tenant leaks across 100 queries
🤖 AI Agents — LangGraph + MCP tool orchestration
🔹 26 tools across 3 custom MCP servers (GitHub, PM, Calendar)
🔹 Human-in-the-loop approval for write ops (15-min timeout)
🔹 NeMo Guardrails (35+ prompt-injection patterns) + Presidio PII redaction
🔹 Multi-model cost routing: Haiku for selection, Sonnet for reasoning
📄 Document Intelligence — OCR → NER → Classification → Search
🔹 Tiered OCR: Apache Tika + pdfplumber + Tesseract fallback
🔹 spaCy NER with date / money normalization (1,686 extracted values)
🔹 Trainable TF-IDF + SVM document classification
🔹 Elasticsearch hybrid search: BM25 + kNN dense + score fusion
⚡ LLMOps — Full AI application lifecycle
🔹 Prompt versioning, A/B testing with Welch's t-test
🔹 5-evaluator framework; eval-gated CI/CD blocks regressions
🔹 Semantic caching (95% similarity) cutting LLM costs
🔹 Canary deployments (10→25→50→100%) with auto-rollback
🔍 AI Code Review — Multi-provider, multi-pass analysis
🔹 Language-specific prompts; 5-tier severity (Critical → Info)
🔹 Security, error handling, and style findings with suggested fixes
🏆 RECENT WINS
✔️ Scaled Investello (value-investing SaaS) to 100,000+ users
✔️ Led v1→v2 modernization at Entegral; fixed Redis/DynamoDB anti-patterns, improved stability
⚙️ STACK
Python, FastAPI, LangGraph, LangChain, Anthropic Claude + OpenAI APIs, PostgreSQL, Redis, Qdrant, Elasticsearch, Docker, Kubernetes, React, TypeScript, Azure, AWS, C#/.NET.
🤝 HOW I WORK
I've built and scaled my own SaaS to 100,000+ users, so I design AI features with unit economics, UX, and reliability in mind — not just technical elegance. Most AI freelancers are pure technologists; I think like a founder because I've been one.
📅 AVAILABILITY
30+ hrs/week · IST (UTC+5:30) with flexible overlap for US/EU timezones.
👉 Send me a message with what you're building, your constraints (latency, cost, accuracy), and timeline. I'll reply within 24 hours with an honest assessment of whether I'm the right fit and a rough approach.
AI Development
AI Agent Development
Large Language Model
Retrieval Augmented Generation
C#
ASP.NET Core
Python
Vector Database
LangChain
Microsoft Azure
React
Natural Language Processing
Machine Learning
Azure OpenAI Service
Generative AI
Nikhil J.
Pune, India
$20/hr
5.0
16 jobs
Experienced Freelance Accountant with 5+ years of hands-on experience in the field of accounting and inventory management. I am reaching out to express my interest in providing my expertise as a Bookkeeper and Accountant for your business.
🌟Technical Proficiency 🌟
I am proficient in utilizing various software related to Accounting Software such as QuickBooks Online, Xero and Zoho Books. Inventory Management Software like Vend, Dear Inventory, SOS, Payroll Software like Gusto, QuickBooks Online, E-commerce integration software like A2X. My expertise covers a wide area of services, including –
📈 Meticulous Bookkeeper: Known for my meticulous approach, I excel in reviewing and maintaining accounting records, ensuring precision and compliance with industry standards.
📈 Bank Reconciliation: Match bank transactions with internal records to ensure accuracy. Identify and resolve discrepancies and reconciliation of monthly statements.
📈 Inventory Management Analyst: Adept at analyzing inventory data, I specialize in identifying discrepancies and implementing corrective action plans to achieve optimal inventory management.
📈 Accounts Payable: Performed all the activities related to AP Management including uploading, coding, and reviewing Bill and processing payments.
📈 Accounts Receivable: Performed all the activities related to AR Management including uploading, coding, and reviewing invoices also following up on overdue invoices and collection of same based on AR ageing report
📈 E-commerce Integration (A2X): Performed integration for Sales channel like Amazon, Shopify with the accounting software's through A2X.
🌟 Why choose me over other freelancers 🌟
🔍 Detail-Oriented Professional: I pride myself on my attention to detail, ensuring that every aspect of accounting and financial management is thoroughly scrutinized and accurately maintained.
🤝 Client-Centric Approach: I believe in building strong relationships with clients, understanding their unique needs, and delivering tailored solutions to help them achieve their financial goals.
💡 Continuous Learner: Committed to staying abreast of industry trends and advancements, I actively pursue professional development opportunities to enhance my skills and knowledge.
🎯 Passionate About Precision: My passion for numbers drives me to deliver precise, reliable, and efficient accounting services that exceed client expectations.
Let's collaborate to unlock the full potential of finances and propel business towards success!
Accounting
Bookkeeping
Accounts Payable Management
Account Reconciliation
Accounts Receivable Management
Payroll Accounting
Inventory Management
Bank Reconciliation
Xero
Bill.com
Zoho Books
Intuit QuickBooks
Accounting Software
Odoo
Data Migration
Kiran S.
Pune, India
$60/hr
5.0
27 jobs
Welcome!
I am Kiran, PCB Designer & Embedded Firmware Developer with 20+ years of experience, 35+ products shipped from concept to mass manufacturing across industrial, automotive, medical, IoT,
and consumer electronics. 100% Job Success Score, Top Rated Plus.
MTech (E&TC), Symbiosis International University | BEng (Electronic Engineering), Shivaji University.
Most hardware projects fail due to poor EMI/EMC compliance, memory leaks, or unoptimized DFM/DFT. I solve this by engineering robust ecosystems and bridging the gap between reliable hardware physics and memory optimized RTOS firmware. Instead of managing multiple disconnected freelancers, you can rely on me to own the full product pipeline from initial schematic architecture to final mass manufacturing.
📌 Hardware Architecture & PCB Design
As a Senior PCB Designer, I natively use KiCad (versions 8–10) and Altium Designer to engineer multi-layer, high-speed, and mixed-signal boards. I handle the complete hardware lifecycle, integrating critical protections like 12V automotive TVS surge clamping, reverse polarity protection, and complex EMI/EMC shielding. Whether you need a flex-PCB for a medical wearable or a rigid board for an industrial controller, my layouts guarantee strict IPC-2221 compliance and flawless Pick-and-Place (CPL) alignment for JLCPCB and mass assembly.
📌 Embedded Firmware & RTOS Development
As a Firmware Engineer, I write secure, hardware-optimized Embedded C/C++ code for ARM Cortex-M (STM32, NXP), ESP32, and nRF52 microcontrollers, as well as Embedded Linux systems (Raspberry Pi, Yocto, Debian). I architect highly stable software using FreeRTOS and Zephyr RTOS. My firmware track record includes deploying secure dual-bank OTA (Over-The-Air) updates, integrating Edge AI (TinyML), and tuning real-time wireless stacks (BLE, Wi-Fi, LoRaWAN, Cellular NB-IoT) without ever bottlenecking the scheduler.
📌 Industrial IoT & Sensor Integration
I seamlessly integrate high-precision components—IMUs, CMOS image sensors, biopotentials, load cells, and BLDC/Stepper motor drivers—into highly constrained physical envelopes. I ensure that industrial communication interfaces like SPI, I2C, CAN bus (SAE-J1939), RS485, and Modbus TCP operate synchronously and fault-free.
Core Services & Deliverables:
📌 Full Product Pipeline Ownership (Concept to Mass Production)
📌 End-to-End Hardware Architecture & Schematic Design
📌 PCB Layout & Routing (KiCad, Altium, EasyEDA)
📌 DFM/DFT Optimization for Mass Manufacturing (PCBA)
📌 Embedded C/C++ Firmware (FreeRTOS, Zephyr, ESP-IDF)
📌 Embedded Linux & Audio DSP (ALSA, PipeWire)
📌 IoT Cloud Connectivity (MQTT, AWS IoT, HTTPS)
📌 Hardware Bring-Up, Debugging & Power Supply Design
Why Work With Me?
Single Point of Accountability: I can take complete ownership of your full product pipeline, eliminating the massive friction of managing separate hardware and software teams. I respect your intellectual property (IP) and strictly safeguard your hardware designs, schematics, and source code. I communicate transparently and deliver on time.
Ready to start?
Click "Invite to Job", book a Consultation on my profile, or send me a message detailing your product vision, physical constraints, or current hardware bugs.
I will respond within 4 hours with an initial technical assessment and approach.
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