Software Design & Custom App Development
Mission-critical platforms built to survive real production traffic.
Most software does not fail because of bad ideas. It fails because it was designed for the demo, not for the tenth thousand user. We start from the constraint you actually have — your traffic, your team size, your compliance obligations — and design around it.
Our engineers build on a modern, deliberately boring stack: Next.js and React on the front, Node.js and Python in the middle, MySQL and PostgreSQL where the data deserves it, and cloud infrastructure that the next person to join your team can actually understand.
Every engagement ships behind a CI/CD pipeline with automated tests, peer-reviewed pull requests, and monitoring wired in from day one. You get a working demo every two weeks, not a status update explaining why the demo is nearly ready.
What we deliver under Software Design & Custom App Development
Six areas of delivery, each staffed by people who have shipped this kind of work before.
Web Platforms
Customer portals, admin panels, dashboards and multi-tenant SaaS built on Next.js and React, rendered server-side for speed and indexability.
Mobile Applications
Native and cross-platform apps for iOS and Android, designed offline-first for the field teams that lose connectivity more often than they admit.
APIs & Integrations
REST and GraphQL services, webhooks, and third-party integrations with retries, idempotency, and the error handling that keeps a retry from double-charging a customer.
Performance & Scale
Load testing, caching strategy, query tuning and database indexing, so a launch spike stays a spike instead of becoming an outage post.
DevOps & Release
Docker, CI/CD pipelines, automated staging environments, and tested rollback procedures that let you ship on a Friday without thinking about it.
Maintenance & Support
Monitoring, dependency patching, security updates and SLA-backed support after launch, because software is never actually finished.
From first call to launch
Architecture blueprint and technical spec agreed before a line is written.
Two-week sprints with a working demo at the end of each one.
Clean, reviewed source code handed over with deployment docs.
Questions clients ask us most
How long does a typical build take?
A focused MVP usually lands between 8 and 16 weeks depending on integrations. Larger platforms run in phases, so you get something usable early rather than waiting a year for the whole thing.
Do we own the code?
Yes. The repository is yours from the first sprint, and we document as we build. There is no lock-in and no licence held back to keep you dependent on us.
Can you work alongside our in-house team?
Regularly. We can lead the engagement, embed next to your developers, or take a defined workstream so your team keeps momentum on everything else.
What happens after launch?
You get a support window with defined response times. From there you can move to an ongoing retainer for monitoring, iteration and new features.
Explore other services
Website Design & Modern Redesign
Sites that load fast, rank well, and turn visitors into leads.
Read moreUI/UX & Product Design Systems
Interfaces designed around how people actually use them.
Read moreCustom Software Development
Internal platforms and enterprise systems built around how your business actually operates.
Read moreTechnology Consulting & Advisory
Independent technical judgement before you commit the budget.
Read moreTell Us About Your Next Milestone
Whether you need a dedicated software team, an end-to-end web portal redesign, or high-conversion marketing automations, our team is ready.
Headquarters
Buddhnagar-10, Kathmandu 44600, Nepal
Inquiries & RFPs
support@avenlixx.comPhone
+977 9717111363Operation Hours
Sunday – Friday: 9:00 AM – 6:30 PM (NPT / UTC+5:45)