I engineer software
that generates
business value.
Full-stack engineer and SaaS founder building high-performance web products, automated workflow pipelines, and custom billing infrastructures.
Developing integrations and core software trusted by companies and government hubs.
Secure transactions routed via NanoBill billing engine
Empowered micro-merchants and corporate entities
High-availability hosting infrastructures on AWS
Robust automated pipeline runs and updates
Engineering software built to solve real-world problems.
As an electronics and telecommunication engineer, my approach to software engineering is rooted in operational reliability and systems thinking. I don't just write code; I design systems that automate workflows, secure digital billing, and translate complex datasets into user-friendly SaaS products.
During my tenure at FarmsEasy, I engineered sensor telemetry pipelines and integrated AI-assisted agronomy bots that directly improved irrigation reliability. Later, I launched ComplyFlow to help enterprises automate legal audits and NanoBill to optimize invoicing cycles.
Why I build: I believe custom software is the highest-leverage asset a modern business can own. My goal is to build products that yield measurable returns on engineering spend.
Sachin Kathar
Full-Stack Engineer & SaaS Founder
Case Studies: Software built to drive performance and scale.
ComplyFlow
Automated Enterprise Legal Compliance Suite
Legal and corporate compliance managers spent 40+ hours per week manually auditing data privacy logs, tracking regulatory changes, and preparing certified DPDP audits.
Engineered an automated compliance scanner that parses data mappings, schedules auto-checks via BullMQ background queues, and dynamically compiles cryptographically verified PDF audit trails.
Reduced audit compilation time by 96% (from 5 days to 8 minutes). Adopted by two enterprise client firms to secure internal data privacy compliance.
- Soil Moisture: 42% (Optimal)
- Pump Relay: OFF
FarmsEasy Agri Bot
AI-Powered Farm Telemetry & Automation Interface
Smallholder farmers lacked affordable, reliable tools to monitor agricultural soil moisture and toggle irrigation pump relays remotely in low-connectivity areas.
Developed an IoT system using ESP32 controllers to fetch soil telemetry, combined with a central Node.js gateway. Created an interactive WhatsApp chatbot powered by Gemini AI that relays real-time status and processes pump switch commands via SMS-like triggers.
Enabled remote crop monitoring and water relay toggling. Achieved 98% uptime in field testing environments with instantaneous sensor-to-chat responses.
Productivity365.in
Microsoft 365 Licensing Estimation Engine
A Microsoft licensing consultancy suffered from slow lead conversions because prospective corporate clients had to wait days to receive custom pricing quotes.
Engineered an interactive pricing config calculator and scheduling pipeline. Integrated custom PHP scripts to generate, sign, and instantly email tailored PDF proposals to leads.
Increased inbound lead conversion rate by 34% in the first 30 days. Handled ₹150,000+ in estimated volume securely.
NanoBill
Micro-Billing & Automated GST Invoicing SaaS
Freelancers and micro-merchants faced delayed payouts due to manual invoice follow-ups, static calculations, and slow payment confirmations.
Built a robust, multi-tenant billing engine with automated payment QR codes. Configured cron jobs to calculate late fees and email reminders to clients weekly.
Successfully processed 8,000+ invoices. Reduced the client payment cycle by an average of 9 days through automated invoice notifications.
Engineering services focused on business outcomes.
Developing high-reliability backends, custom portals, and database pipelines to optimize business operations.
SaaS Products
Architecting multi-tenant cloud platforms, user access layers, and data-sharing interfaces designed to capture subscription market share.
Billing Systems
Engineering automated invoices, dynamic tax calculations, background reminder crons, and secure payments via Stripe and Razorpay.
Workflow Automation
Converting tedious manual operational audits and reporting checklists into background workers that compile compliant files instantly.
Internal Tools
Building custom administrative consoles, telemetry viewports, and audit trackers to help teams manage production state easily.
AI Automation
Integrating official communications channels (WhatsApp/Email APIs) with generative LLM backends to manage client requests instantly.
ERP & CRM Integrations
Connecting telemetry logs and database pools to external client CRM networks to synchronize customer metrics.
A systematic engineering workflow designed for speed and safety.
From database blueprints to continuous automated deployment pipelines.
Discovery
Deep-diving into business processes, manual hurdles, and telemetry requirements to align technical capabilities with commercial objectives.
Planning
Defining application architecture, database schemas (PostgreSQL/Supabase), background worker parameters, and API integration endpoints.
UI/UX
Creating minimal, high-fidelity visual mockups and layout systems (Stripe/Linear inspired) to ensure usability and brand confidence.
Development
Writing type-safe, optimized code (Next.js, Node.js, Express) bound to serverless deployments or scalable Docker containers.
Testing
Running automated test suites, testing job workers, validating payment flows, and auditing SEC and GDPR compliance lists.
Deployment
Launching production-ready static layers and secure server routers on AWS and Vercel with zero-downtime deployment pipelines.
Ongoing Support
Monitoring telemetry feeds, checking background queue logs, applying security patches, and optimizing performance scales.
What I work with.
Articles on software engineering and system reliability.
Deep dives into optimizing database triggers, reducing API latency, and deploying secure integrations.
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Have a product vision? Let's engineer it.
I partner with founders and technical leaders to design, build, and deploy high-leverage software.