Haynes Lab is a Charlotte, NC software engineering consultancy that helps founders and growing teams turn ideas, prototypes, and rough MVPs into production-ready products. We combine startup speed with senior technical judgment, helping clients move quickly without fragile code or expensive rewrites.
Haynes Lab is led by Daniel Haynes, a technical founder and fractional CTO with more than a decade of experience building and scaling real systems. Daniel started his first software company, Gaminglight, in 2013 and spent over ten years scaling high-traffic platforms before selling it in 2024. He later served as founding CTO at SharpDuel, taking the platform from zero to over $200k MRR in under a year. He has also led engineering at a smart-hardware company, covering full-stack apps, STM32 and ESP32 firmware, TensorFlow ML, manufacturing, and provisioning automation.
Our work includes MVP development, scalable SaaS architecture, full-stack web apps, backend systems, payments and subscriptions, internal tools, workflow automation, AI features, embedded systems, IoT, and hardware-adjacent prototyping. We work across modern web, cloud, mobile, AI, and embedded stacks including Next.js, Node.js, Flutter, OpenAI, STM32, and ESP32.
Clients hire us when they need a senior engineering partner who can think like a founder, communicate clearly, and make practical technical calls. We ask before we code, starting with the user, business goal, and real workflow instead of blindly building from a spec. We keep communication direct with updates on what was built, what got tricky, and what decisions are needed next.
We stay lean when a project needs focus, but also have a trusted network of engineering, design, automation, and implementation resources that lets us scale for larger jobs. Whether the need is a prototype, production-ready MVP, fractional CTO leadership, AI automation, custom software, or hardware/software integration, we help teams build the right thing and ship it.
Software & Mobile App Dev for Sports Technology Firm
Featured Review
Custom Software DevelopmentMobile App Development
Consumer Mobile App Development
Confidential
Mar. 2026 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"Haynes Lab's communication is always excellent, and their work product is top-notch."
Jun 15, 2026
CEO, PropsBot.ai
David Reilich
Verified
Sports
Brooklyn, New York
1-10 Employees
Online Review
Verified
Haynes Lab has taken over the software and mobile app development work of a sports technology firm. They've built numerous new features, including a bet tracking system, a parlay tool, and an AI insights tab.
Haynes Lab has helped the client increase downloads by 15%, boost revenue by 12%, and receive excellent user feedback. The team's project management and communication are outstanding. The team consistently delivers top-notch work on time.
BACKGROUND
Introduce your business and what you do there.
I'm the CEO of an AI-powered sports data research company.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire Haynes Lab to accomplish for your company?
We needed Haynes Lab to take over our development work.
SOLUTION
What was the scope of their involvement?
Haynes Lab has taken over our development work. The team has worked on numerous new features for our company and has found security risks in our code. Haynes Lab has completely refactored our UI, added a bet tracking system, parlay tool, AI insights tab, and advanced data for all of our sports.
What is the team composition?
We've worked with one teammate from Haynes Lab.
How did you come to work with Haynes Lab?
We found Haynes Lab through an online search. We chose them because they had high ratings.
How much have you invested with them?
The project cost is confidential.
What is the status of this engagement?
We started working with Haynes Lab in March 2026, and the engagement is ongoing.
RESULTS & FEEDBACK
What evidence can you share that demonstrates the impact of the engagement?
Thanks to Haynes Lab, our downloads are up 15% over last year. Our revenue is also up 12% due to the app redesign spearheaded by Haynes Lab. User feedback has been excellent.
How did Haynes Lab perform from a project management standpoint?
Haynes Lab's project management has gone above and beyond. The team is always on time. We communicate via virtual meetings, emails, and messaging apps.
What did you find most impressive about them?
Haynes Lab's communication is always excellent, and their work product is top-notch.
Are there any areas they could improve?
There's nothing Haynes Lab could improve on.
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Web & Web App Design & Development for Sports Analytics Co
Web DesignWeb Development
NextJS
+6
Less than $10,000
Dec. 2025 - Jan. 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"Haynes Lab's care and attention to detail are unmatched."
Jun 9, 2026
CEO, Opening Line Analytics
Nic Giannone
Sports
San Antonio, Texas
1-10 Employees
Online Review
Haynes Lab provided website and web app development and design services for a sports analytics company. The team updated the front- and backend of the client's web app and optimized the platform.
Haynes Lab delivered a fully functional website that met the client's criteria. The team was highly attentive to detail, understood the client's project and goals quickly, and was highly collaborative. Haynes Lab's team was an expert, and the client was looking forward to working with them again.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the CEO of Opening Line Analytics
Describe what your company does in a single sentence.
Sports Analytics
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire Haynes Lab to accomplish?
Full Website Design
SOLUTION
How did you find Haynes Lab?
Online Search
Why did you select Haynes Lab over others?
High ratings
Pricing fit our budget
Great culture fit
Good value for cost
Company values aligned
How many teammates from Haynes Lab were assigned to this project?
1 Employee
Describe the scope of work in detail. Please include a summary of key deliverables.
Assistance with transitioning an existing web app to free, updates to the front end and backend. Overall optimization around the entire app with possibilities of enhancements.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Fully function website that met all criteria I asked for and we have now served over 1,000 unique users.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Cannot recommend Dan enough to anyone looking for an expert engineer. This is the second consecutive project we have worked together on and it has further reinforced why I choose Daniel. His attention to detail and ability to jump in and understand your project structure and goals at lightning speed. Once he understands your project he becomes a thought partner and helps drive improvement. I am already looking forward to the next project I can work with Dan on.
What was your primary form of communication with Haynes Lab?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
Haynes Lab's care and attention to detail are unmatched. He is not satisfied until you are satisfied where the project is. Above and beyond.
Are there any areas for improvement or something Haynes Lab could have done differently?
N/A
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
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2 Reviews
Our Story
Haynes Lab is led by Daniel Haynes, a technical founder and fractional CTO who helps teams turn ideas, messy systems, and early prototypes into working products. Daniel works across software, hardware prototyping, automation, and product architecture, bringing a practical engineering approach to projects that need both strategic direction and hands-on execution. Haynes Lab also has access to a broad network of trusted technical and creative resources, allowing us to scale up for jobs of any size
Meet the Team
Daniel HaynesFounder
Daniel Haynes is a technical founder, fractional CTO, and prototyping engineer focused on helping companies turn ideas into working products. He works across software, hardware, automation, AI workflows, and product architecture.
What Sets Us Apart
Voice Notes, Not Guesswork
Every week, clients get a voice update with real context: what we built, what got tricky, and the one decision we need from them. You never have to wonder where your project stands.
We Ask Before We Code
Before commits start, we figure out who will actually use the product and what they need to get done. That discovery step keeps the work useful, focused, and far less generic than spec-only development.
Senior Builders, Scalable Team
Haynes Lab is led by Daniel Haynes, a founder and CTO with over a decade of experience shipping software, hardware-adjacent systems, and production SaaS. We stay lean when needed and scale trusted resources for larger jobs.
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