About | C3S Software

Our story

Built from scratch.
Grown through trust.

C3S was founded in March 2015 by Curtis Zweier — a software engineer and engineering executive with over 25 years of experience leading development teams across enterprise software companies in the Philadelphia area.

Curt had spent years on both sides of the outsourcing equation — hiring outsourcing firms as a VP of Development, and watching most of them fall short. Too little transparency. Too little ownership. Too little accountability. He believed there was a better way to build and run remote engineering teams, and C3S was his proof of concept.

We started with one client and two engineers. That first client is still with us today. Not because of a long contract — but because the team earned it.

2015

Founded in Philadelphia

C3S launched with one US client and two engineers in Cairo. The focus: build a team that outperforms in-house employees.

2016–19

Building the foundation

Early client wins in cybersecurity, enterprise SaaS, and electronics distribution. First clients are retained through renewals — not contracts.

2020–22

Scaling through the pandemic

Remote-first by design, C3S continued delivering without disruption while the rest of the industry scrambled to adapt.

2023–24

Expanding into AI engineering

C3S begins building production AI for enterprise clients — autonomous agents, enterprise chatbots, and deep workflow integrations.

2025

Zero turnover. Forward-deployed.

0% engineer turnover. AI agents in production. 300+ engineers serving US companies across 15+ industries — and still growing.

What we stand for

Our values aren't on a poster.
They're in how we work.

Quality without compromise

We don't cut corners to hit deadlines. We flag problems before they become yours, push back when something isn't right, and hold ourselves to a standard that goes beyond “it works.” This is why clients stay with us for years — not months.

Full transparency, always

You see everything — sprint velocity, code quality, delivery health, team structure. We don't hide problems or spin bad news. Transparency is what makes a remote team feel like your team.

Ownership over execution

Our engineers don't just close tickets. They care about the product, ask why before they build, and take responsibility for outcomes — not just outputs. This is the difference between a contractor and a team member.

Retention over replacement

We invest in our engineers — their growth, their working conditions, and their sense of pride in what they build. In 2025, our turnover was zero. That's not a coincidence. It's the result of building a team people actually want to be part of.

Our culture

A team that stays because they want to —
not because they have to

C3S has an unusually strong retention rate for a software company. Our engineers stay because they're treated like professionals, given real ownership, and work on challenging problems that matter. In 2025, our turnover was zero.

Engineer turnover in 2025. Our team stays because they're proud of the work and the culture.

8+ yrs

Average client relationship. When engineers stay, client relationships deepen.

Cairo

Engineering hub — one of the strongest technical talent pools in the region

Philadelphia

US operations — close to our clients, aligned to their timezone

Why Cairo

Egypt is classified as an
Elite Outsourcing Hub

The Ataraxis Global Outsourcing Talent Index — a comprehensive assessment across 193 countries evaluating labor costs, English proficiency, talent availability, digital infrastructure, and business stability — classifies Egypt among the world's elite outsourcing destinations.

C3S has operated in Cairo since 2015. Over 11 years, we've built one of the region's most experienced engineering teams — with 0% turnover in 2025 and client relationships that average 8+ years.

View the Ataraxis Global Outsourcing Talent Index ↗

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Elite classification

Egypt ranks in the top tier of the Ataraxis index — assessed across 193 countries on labor, talent, infrastructure, and business stability.

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Strong English proficiency

Egypt consistently ranks among the highest in the region for English proficiency — a key differentiator for US-facing engineering teams.

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Deep technical talent pool

Cairo is home to world-class engineering universities producing thousands of computer science graduates annually — with a growing culture of software excellence.

Founder & CEO

Curtis Zweier ↗

Founder & CEO · Philadelphia, PA

Curt founded C3S in 2015 after more than two decades leading engineering teams at enterprise software companies in the Philadelphia area. As VP of Development at NTP Software and Director of Development at DefendX Software, he spent years both hiring outsourcing firms and watching them fail — too little transparency, too little ownership, too little accountability.

He started C3S to do it differently. The model was simple: build a remote engineering team that performs better than a client's own employees, treats engineers like professionals, and earns trust through quality rather than contracts. Eleven years later, that first client is still with us.

MS Computer Science — Drexel University

Former VP of Development — NTP Software

Former Director of Development — DefendX Software

25+ years engineering leadership

The team

The people behind the work

Our leadership and senior engineering team — the people who run engagements, set the standard, and deliver for our clients every day.

Curtis Zweier ↗

Founder & CEO

Philadelphia, PA

Pete Donovan ↗

Head of Business Development

Philadelphia, PA

Anas Abdullah

Senior Engineering Manager

Cairo, Egypt

Abdullah Hassan

Senior Engineering Manager

Cairo, Egypt

Abdullah Adel

Senior Engineering Manager

Cairo, Egypt

Amr Saqr

Senior Engineering Manager

Cairo, Egypt

Islam Mousa

Senior Engineering Manager

Cairo, Egypt

Mohamed Diab

Senior Engineering Manager

Cairo, Egypt

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Included at no cost

A dedicated Project Manager from day one

Every C3S client gets a dedicated PM at no extra charge — your single point of contact for communication, updates, and day-to-day coordination. You always know where things stand.

⚡

Our confidence guarantee

Not happy? Walk away in weeks — not months

We don't lock you into long contracts. If we're not delivering to your standard, terminate with just a few weeks of notice. No penalties. We offer this because we back our work completely.

One client. Two engineers. Eleven years later.