Custom Software Development
Bespoke systems built around how your business actually operates, not a template it's forced to fit.
Posh Developers designs and builds the products behind ambitious companies — the kind of software that gets scrutinized by investors, scaled under load, and trusted with the business.
Most software gets built twice — once quickly, and once properly, after it breaks. We only do the second version.
We're a small collective of design thinkers and staff-level engineers who've spent our careers inside companies where the software was the product, not an afterthought. The people who scope your build are the same people who ship it.
Four commitments behind every technical decision we make.
We estimate for the version that survives an audit, not a demo. Shortcuts get flagged and priced — never taken quietly.
Architected for the traffic and team size you're growing into, without over-engineering for a scale that may never arrive.
Documented and structured so a new engineer can be productive in it within a week — including one who never spoke to us.
Elegant code that doesn't move a metric is a hobby, not a deliverable.
We scope narrowly when that's what the problem needs, and go end-to-end when you'd rather manage one partner than five vendors.
Bespoke systems built around how your business actually operates, not a template it's forced to fit.
Fast, accessible, production-grade web platforms — from the first pixel to the deployment pipeline.
Native-feeling iOS and Android apps engineered for the app-store review, not just the sprint demo.
Internal platforms, workflow systems, and integrations that hold up to compliance and scale.
Interface design grounded in research, not trend — built to be learned once and used for years.
Infrastructure-as-code environments on AWS, sized correctly and priced to make sense at your scale.
Well-versioned, documented APIs designed as products in their own right — for partners and internal teams alike.
Untangling legacy platforms into something a modern team can actually extend — migrated without downtime.
Case studies from six recent engagements. Images are placeholders — final photography and screens go in before launch.
Fintech · Web Platform
A multi-entity treasury platform for mid-market finance teams, replacing a stack of spreadsheets with a single source of truth.
Healthcare · Mobile App
A HIPAA-compliant mobile app connecting patients with care teams between appointments, built for both iOS and Android.
Logistics · Enterprise System
A real-time dispatch and routing system for a 400-vehicle fleet, modernized from a legacy on-premise application.
E-Commerce · Web Platform
A headless commerce rebuild for a multi-brand retailer, unifying six storefronts on one composable platform.
Proptech · API Platform
A partner-facing API layer that lets 40+ property management tools integrate with one leasing system instead of five.
EdTech · Web Application
A cohort-based learning platform with live sessions, grading, and progress tracking for a 25,000-student user base.
We stay opinionated about a focused set of mature technologies rather than chasing every new framework.
Reviewed by staff-level engineers, not whoever's free.
Weekly demos and a shared backlog — no guessing what shipped.
Designed for the traffic and team size you're growing into.
Every sprint ties back to a metric leadership cares about.
A maintenance retainer, not a vanished vendor.
Empty states and error copy are never an afterthought.
"They scoped it like their own company. Six months in, the architecture still hasn't needed a rewrite."
"The first agency to push back on our own bad ideas — and they were right every time."
"We've worked with four dev shops. Posh is the only one we've asked back for a second build."
We reply within one business day — usually a short call before anything gets priced.