About Me.
Full-Stack engineer and enterprise automation specialist bridging the gap between bespoke web software and streamlined business operations. Serving fast-moving startups and companies across the US, UK, UAE, and worldwide.
Hi, I'm Sumer Kumar. Over the last 6+ years, I've worked at the intersection of product engineering and business automation. Whether architecting a real-time web portal from scratch or transforming multi-platform operations into frictionless pipelines, my goal is simple: engineer dependable systems that scale smoothly and give teams their time back.
Engineering Philosophy
Clean codebases, strict type safety, and minimal technical debt — software that scales without surprises.
Business-First Mindset
Understanding the business model behind the code — automations built to fail gracefully and recover fast.
Core Skills & Technologies
A battle-tested technology stack spanning responsive client interfaces, resilient backend infrastructure, and automated business workflows.
Frontend Engineering
Backend & Cloud APIs
Zoho Ecosystem & Automation
DevOps & Cloud Deployment
How We Build Together.
A structured, transparent roadmap from discovery to launch and scaling.
- Step 01Phase 1/6
Discovery Call
A 20–30 minute call to understand your products, buyers, and export markets.
- Step 02Phase 2/6
Market & Competitor Audit
We review what your competitors are doing online and where the gaps are.
- Step 03Phase 3/6
Scope & Fixed Quote
A written scope with page list, features, timeline, and a fixed price — no surprises.
- Step 04Phase 4/6
Design & Build
Wireframe, design approval, then development in Next.js with weekly previews.
- Step 05Phase 5/6
Launch & Handover
Domain, hosting, SSL, analytics, Search Console, and a walkthrough for your team.
- Step 06Phase 6/6
Growth Support
Optional ongoing SEO, content, and feature development as your business scales.
Work Experience
6+ Years Hands-OnProven track record delivering scalable systems across startups, client products, and enterprise consulting.
Zoho & Full-Stack Consultant
Independent Consultant
Partnering directly with founders, digital agencies, and SMEs worldwide to architect custom web applications, client portals, and end-to-end Zoho CRM/ERP automations that replace manual bottlenecks with automated precision.
Zoho & Automation Developer
Groovy Maven
Engineered a high-converting pre-order storefront with tailored user journeys, automated real-time inventory reconciliation, and Deluge-driven order routing that eliminated manual fulfillment data entry.
Software & Automation Developer
PlayCKC Interactive Pvt. Ltd.
Spearheaded backend services and administrative consoles for high-traffic real-time sports platforms, utilizing Node.js, WebSockets, and PostgreSQL to deliver low-latency live score processing and automated leaderboard payouts.
Full-Stack & Automation Developer
Shraddha Websoft Pvt. Ltd.
Constructed responsive Next.js web applications and client dashboards, implemented secure REST API endpoints, and created automated webhook pipelines connecting external SaaS tools.
Client Recommendations
Direct feedback from founders, product owners, and engineering leaders I've worked alongside.
“Sumer engineered our operations dashboard and backend APIs with remarkable precision. The system handled our multi-branch data flawlessly from day one.”
“Our pre-order pipeline and inventory sync were a headache until Sumer stepped in. The custom automations saved our team dozens of manual hours every single week.”
Frequently Asked Questions
Sumer Kumar is a freelance Full-Stack Engineer and Zoho Solutions Architect operating under the brand DevSumer. Based in Rajasthan, India, he partners with startups, digital agencies, and enterprises globally to build high-performance web applications and automate complex business operations.
Sumer brings over 6 years of hands-on software development experience. Over this time, he has delivered 25+ production-grade web platforms, API architectures, and enterprise Zoho implementations across diverse industries including e-commerce, real-time gaming, and B2B services.
His web stack centers on Next.js, React, TypeScript, Node.js, Express, and PostgreSQL/MongoDB. On the enterprise automation side, he specializes in Deluge scripting, Zoho CRM, Zoho Creator, Zoho Books, Zoho Inventory, Zoho Flow, webhooks, and REST API integrations.
Sumer addresses two core business challenges: building modern, conversion-optimized web software (SaaS apps, client portals, internal dashboards) and eliminating manual operational overhead by automating data flows across your CRM, inventory, payment, and customer support tools.
Sumer has extensive experience collaborating with international teams in the US, UK, and UAE. He maintains clear, proactive communication via Slack, email, and scheduled video syncs, providing regular demo deployments and transparent sprint milestones.
Yes. Every project includes comprehensive handover documentation, code walkthroughs, and dedicated post-launch support. Sumer also offers flexible retainer options for ongoing feature development, performance monitoring, and CRM workflow maintenance.
You can reach Sumer directly by emailing fullstack@devsumer.online, submitting an inquiry through the contact page at /contact, or connecting on LinkedIn (www.linkedin.com/in/sumersuthar/). He typically responds within 24 hours.
Have a project in mind or need workflow automation?
Let's discuss your requirements, architecture, and roadmap. Direct senior developer access with zero agency overhead.