Modernizing a legacy system without stopping the business
Software engineering from New Delhi, for teams in India and abroad
Off-the-shelf tools cover the average business. Most businesses are not average in the places that matter: pricing rules, approval chains, the way stock moves, the way customers are served. We build software for those places — systems your team uses every day that encode how you work and remove the manual steps between tools.
We map the process as it runs today, with the people who run it, before choosing screens or technology.
A data model that reflects your business entities and their states, so reports and integrations stay consistent.
Web front ends, APIs, background jobs and databases built and owned by one team.
Connections to accounting, payment, messaging and existing internal systems through APIs or scheduled sync.
Permissions designed with the process, so each role sees and changes only what it should.
Monitoring, fixes and an improvement backlog after launch, under a clear support agreement.
Systems shaped to your operations, not the other way round.
01
One system for the work that runs across teams — orders, jobs, approvals and handovers.
02
Self-service access to orders, documents, tickets and account data.
03
Rule-based pricing, discounts and quote documents generated from live data.
04
Shifts, rooms, vehicles or crews planned with conflicts caught before they happen.
05
Multi-step approvals with audit history, reminders and escalation.
06
Mobile-friendly tools for attendance, inspections and job updates at the site.
07
Admin consoles for data, users, settings and reports behind your products.
08
New components that take over from ageing desktop or spreadsheet tools one area at a time.
When critical data lives in files passed between people, a single system removes re-entry and version conflicts.
Pricing, compliance or fulfilment rules specific enough that configuring a generic tool costs more than building.
A system of record that sits between existing products and keeps them consistent.
Turning a manual service into a portal customers can use themselves.
Recognise your situation here?
Talk to an engineerA short discovery phase produces scope, architecture and estimate. Build runs in sprints with a working demo every week.
A lead engineer owns architecture and delivery from the first workshop to production.
Source code and cloud accounts belong to you from day one.
Architecture notes, runbooks and environment documentation are part of the deliverable.
Indexes, archiving and reporting paths planned for years of records.
Access rules enforced at the API and database, not only in the interface.
Structured logs, error tracking and health checks ship with the first release.
Clear module boundaries so a component can be rewritten without rewriting the system.
01 · Discover
Workshops with the people who run the process today. We map how work actually moves, where it stalls and what the system must never get wrong.
02 · Define
A written scope: users and roles, core workflows, integrations, non-functional requirements and a release plan you can hold us to.
03 · Architect
Data model, service boundaries, hosting, security model and the trade-offs behind each choice — reviewed with your team before code starts.
04 · Build
Short sprints with a working demo every week. Code review on every change, automated tests on the paths that carry money or data.
05 · Validate
Functional QA, role-by-role acceptance, performance checks and a security pass before anything reaches production users.
06 · Scale
Staged rollout, monitoring and a support window. Then the backlog of improvements that only real usage reveals.
Sales and inventory CRM for a stone distributor
Project, workforce and billing platform for an infrastructure firm
Event-driven food delivery platform
It depends on the number of roles, workflows and integrations. We start with a short discovery, then give a written estimate for the build based on the agreed scope, so you know the cost before development starts.
A focused first release of an internal system typically takes a few months. We plan releases so your team is using part of the system early rather than waiting for everything.
You do. Code lives in your repository and infrastructure is set up in your cloud accounts.
Yes. Most projects integrate with accounting, payment, messaging or legacy systems. We review what APIs or data access exist during discovery.
Custom software development means designing and building software for one organisation's specific workflows, data and users, instead of adapting an off-the-shelf product. You own the code and decide how it evolves.
Indian engineering teams combine strong full-stack skills with cost efficiency and overlapping working hours for clients in Asia, the Middle East, Europe and, with planning, North America. Eryon is based in New Delhi and works with clients in India and abroad.
Yes, through the product's API or scheduled data exchange. We confirm what each system supports during discovery and design the integration around it.
We provide a support period for fixes and monitoring, then an optional ongoing agreement for improvements, updates and infrastructure care.
Tell us what the system needs to do. We'll reply within 24 hours with questions, not a sales script.
