App Development
Eficens' app development practice takes ownership of the entire build lifecycle — from discovery and architecture through delivery, testing, and post-launch support. We work in close partnership with your stakeholders to translate business requirements into robust, scalable software. Our engineers follow opinionated engineering standards (CI/CD, code review, automated testing) so that what gets shipped stays maintainable for years.
What we deliver
Web Application Development
Performant, accessible web applications built with modern frameworks — React, Next.js, Vue — and backed by well-structured APIs.
Mobile Development
Native iOS and Android apps, or cross-platform React Native and Flutter solutions, designed for real-world usage patterns.
API & Backend Engineering
Scalable REST and GraphQL APIs, microservices architectures, and event-driven systems designed for reliability at scale.
UI/UX Design
Product design integrated into the development workflow — wireframes, prototypes, and a polished final UI that users actually enjoy.
Legacy Modernisation
Incremental migration of monoliths and legacy codebases to modern stacks without disrupting ongoing operations.
Post-Launch Support
SLA-backed support retainers covering bug fixes, performance tuning, security patches, and minor feature iterations.
Real outcomes, real clients.
Every engagement is different. Here's how we've delivered for clients across industries with problems like yours.
The challenge
A payments startup needed a real-time transaction dashboard handling 10,000 concurrent users, with a hard deadline tied to a Series A investor demo.
What we did
Eficens delivered a React + Node.js platform in 7 weeks — two weeks ahead of deadline. The demo closed the round. The platform now processes $2B+ in annualised transaction volume.
7 weeks
Delivered, 2 weeks early
The challenge
A regional hospital network needed a cross-platform patient portal (web + iOS + Android) to reduce missed appointments and manual scheduling overhead.
What we did
Eficens built and launched the portal in 10 weeks. Appointment no-shows dropped 34% within 90 days, saving the network an estimated $1.2M annually in administrative costs.
34%
Reduction in appointment no-shows
The challenge
A national retailer was running a 10-year-old Java monolith that released once per quarter — making it impossible to respond to market changes or competitor moves.
What we did
Eficens migrated the platform to a microservices architecture over 6 months using strangler-fig migration to keep the existing system live. Release cycles dropped from 12 weeks to under 2 weeks.
6× faster
Release cycle improvement
By the numbers
120+
Applications delivered
99.5%
On-time delivery rate
4.9/5
Average client satisfaction
8 weeks
Median MVP timeline
Technology Stack
Further reading
Signal-Led Outbound: The Pre-CRM Execution Layer
The CRM records what happened. Signal-led outbound decides what happens next—before a prospect ever enters the funnel. This is the pre-CRM execution layer, and it's where pipeline is actually created.
Intent vs. Relevance: Why Static Lists are Killing Sales Performance
A prospect who fits your ICP perfectly but isn't in-market right now is not a sales opportunity—they're a future opportunity being mismanaged. Static lists confuse relevance with intent, and it's costing teams millions in wasted outreach.
10x SDR Productivity: The Power of Autonomous Signal Interpretation
The SDR bottleneck is not a headcount problem—it is a research problem. Autonomous signal interpretation removes 80% of the pre-outreach research burden, allowing a single SDR to work the pipeline of ten.
Ready to get started?
Let's talk about how our App Development practice can help your team move faster.
Talk to our team