Hiring a senior JavaScript engineer locally takes 3-6 months. A cheap agency ships working UI on spaghetti code. GIMMIR is the third option.
We provide dedicated engineering teams - 3-5 senior developers in Next.js, Node.js, React Native, and Python - that integrate into your workflow and ship production code within 2 weeks of kickoff.
Who we work with:
Funded Startups (Post-Series A/B) - You have the runway, but the hiring pipeline is 4-6 months out. We deploy a pre-vetted, pre-aligned team in 2 weeks so you don't lose momentum between funding and growth.
SaaS & HealthTech Scale-ups - You need engineers who understand fintech-grade backends and HIPAA-adjacent data flows, not generalists who Google the architecture. Our team has 8+ years of combined experience in these verticals.
Digital Agencies (White Label)- Your client wants a custom web or mobile app. You don't have dev capacity. We build it under your brand, you keep the relationship and the margin.
Why engineering leaders choose GIMMIR:
Team deployed in 2 weeks, not 2 months
No bait-and-switch - the engineers you meet are the engineers who build
Full IP ownership from day one
10-day replacement guarantee
Same Slack, same Jira, same standups
Ready to stop losing sprints to the hiring cycle? Let's talk.
Min project size
$5,000+
Hourly rate
$25 - $49 / hr
Employees
10 - 49
Year founded
Founded 2025
No have been added yet...
Pricing Snapshot
Min. project size
$5,000+
Avg. hourly rate
$25 - $49
/hr
Rating for cost
5
/5
What Clients Have Said
GIMMIR is noted for providing good value for cost across projects, with clients reporting budgets ranging from $10,000 to $50,000. They deliver high-quality work efficiently, maintaining strong communication and adaptability throughout engagements.
Clients commend GIMMIR for their speed and efficiency, often exceeding expectations in delivering projects quickly while maintaining quality, especially in complex systems such as HealthTech apps and CMS platforms.
Effective Use of Technology
GIMMIR effectively employs modern technology and tools, including large language models and robust backend systems, to enhance app performance and operational efficiency, leading to significant improvements in client projects.
Strong Project Management
GIMMIR consistently delivers projects on time and with high quality. Clients appreciate their structured progress updates and clear communication, which ensures project objectives are met efficiently.
Adaptability to Changing Requirements
GIMMIR demonstrates flexibility and adaptability when project scopes expand or new requirements emerge, ensuring continued delivery of high-quality results despite changes.
High-Quality Deliverables
GIMMIR is recognized for delivering high-quality work. They consistently meet client expectations, providing robust and stable solutions, such as a production-ready fitness app and a solid AI journaling tool.
Custom Software DevelopmentIT Staff AugmentationMobile App Development
$10,000 to $49,999
July 2025 - Jan. 2026
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"All delivered fast as promised."
Mar 13, 2026
CEO, Applefy
Denys Havryliak
Verified
Hospitality & leisure
Dover, Delaware
51-200 Employees
Online Review
Verified
GIMMIR developed an Expo app for a software development company. The team worked on the iOS and Android versions of the app.
GIMMIR delivered the project quickly, meeting all requirements and showing flexibility when new ones were introduced. The team also impressed the client with their efficient use of a large language model (LLM).
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the CEO of Applefy
Describe what your company does in a single sentence.
Premium Software Development Company, focused on User Experience & Quality
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire GIMMIR to accomplish?
Develop Expo App for HealthTech App for one of our customers
SOLUTION
How did you find GIMMIR?
Referral
Why did you select GIMMIR over others?
High ratings
Great culture fit
Good value for cost
Referred to me
How many teammates from GIMMIR were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Mobile App for iOS & Android
We did Design & the Admin Panel using JS ourselves
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
speed, efficiency, and active LLM usage
Describe their project management. Did they deliver items on time? How did they respond to your needs?
All delivered fast as promised. And showed flexibility on the new requirements.
What was your primary form of communication with GIMMIR?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
speed
Are there any areas for improvement or something GIMMIR could have done differently?
I wouldn't say anything.
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
Mobile App Development for Boutique Fitness Franchise
Mobile App Development
Confidential
Oct. 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
“GIMMIR’s communication and speed have been impressive.”
Feb 26, 2026
CEO, UN1T
Rob Smyth
Verified
Fitness
London, England
1-10 Employees
Online Review
Verified
GIMMIR has rebuilt a mobile app for a boutique fitness franchise from scratch. The team has also built a CMS and a full backend API with Stripe Connect integration, a training program builder, and more.
GIMMIR has delivered a production-ready app that is now stable and faster than the client's previous platform. The team has also delivered a CMS that consolidates scheduling, bookings, members, payments, and analytics into one system.
BACKGROUND
Introduce your business and what you do there.
I’m the CEO of UN1T, a global boutique fitness franchise offering group strength and conditioning classes based on elite athlete training systems. We focus on teamwork, structured progress, and measurable results.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire GIMMIR to accomplish for UN1T?
We needed GIMMIR to create an app and a central management system (CMS) for us.
SOLUTION
What was the scope of their involvement?
GIMMIR has delivered a full rebuild of both the UN1T app and CMS. This includes a completely new mobile app rebuilt from scratch with modern architecture, a multi-studio CMS platform with scheduling, bookings, member management, analytics, and TV screen management. The team has also delivered a full backend API with 80+ endpoints, Stripe Connect marketplace integration, an exercise library with video hosting, a phase-based training program builder, and role-based access control for all user types.Overall, it’s a fully integrated ecosystem designed to replace Glofox and give UN1T full ownership and control of our tech stack.
What is the team composition?
We’ve worked with 2–5 teammates from GIMMIR.
How did you come to work with GIMMIR?
We found them through a referral. We chose them because their pricing fit our budget and they offered good value for the cost.
What is the status of this engagement?
We started working with them in October 2025, and our engagement is ongoing.
RESULTS & FEEDBACK
What evidence can you share that demonstrates the impact of the engagement?
GIMMIR has delivered a fully rebuilt UN1T app that is now production-ready, stable, and faster than our previous platform. They’ve also delivered a new multi-studio CMS that consolidates scheduling, bookings, members, payments, and analytics into one system. Moreover, the team has integrated Stripe Connect, allowing us to control franchise payment flows for the first time.Overall, we’ve seen a significant reduction in outages and bugs compared with our previous developers. We’ve also seen improved operational visibility, with live analytics on revenue, bookings, and member behavior.
GIMMIR has delivered a stronger technical foundation for future expansion, including online training, AI features, and white-label opportunities. These outcomes demonstrate clear progress toward owning our full tech stack and reducing dependence on third-party systems like Glofox.Although the app and CMS are still in the testing and pre-launch phase, we already have several measurable technical improvements compared to our previous system and developers. For example, the app load time has been reduced by ~40–50% in internal tests, resulting in significantly faster navigation and screen rendering. The API response times have also improved by ~30% due to a complete backend rebuild and endpoint optimization.Moreover, we’ve had zero critical outages during the development and testing period, compared to multiple outages with our previous developers. The stability has also increased, with the new system passing consistent reliability checks across both iOS and Android builds.
How did GIMMIR perform from a project management standpoint?
GIMMIR’s project management has been very strong. They communicate clearly, provide structured progress updates, and respond quickly when issues arise. Although the scope has expanded significantly beyond the original plan, they’ve adapted well and continued delivering at a high standard. Within the areas we agreed on and prioritized, they’ve delivered on time and maintained consistency throughout the project.
What did you find most impressive or unique about them?
GIMMIR’s communication and speed have been impressive.
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
Custom Software Development for AI Journaling Company
Custom Software Development
$50,000 to $199,999
May 2024 - Sep. 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"GIMMIR's ability to deliver high-quality work on time was impressive."
Feb 25, 2026
CTO, Journal Me
Vitalii Bulyzhyn
Verified
Arts, entertainment & music
London, England
1-10 Employees
Online Review
Verified
GIMMIR developed an AI-powered journaling company's tool using Go. The team structured the database, set up the infrastructure, and integrated all the flows into a solid product.
GIMMIR successfully delivered all the features with great quality. The team was punctual and communicative via virtual meetings, email, and messaging apps.
BACKGROUND
Introduce your business and what you do there.
I’m the CTO of JournalMe, an AI-powered journaling tool integrated with WhatsApp that delivers personalized prompts and insights, making journaling easy, engaging, and accessible within your favorite messenger.
OPPORTUNITY / CHALLENGE
What challenge were you trying to address with GIMMIR?
We were developing our product and needed a reliable company to help us with that.
SOLUTION
What was the scope of their involvement?
GIMMIR developed our product using Go and built the product to integrate with WhatsApp. The team structured the database, set up the infrastructure, and integrated all the flows into a solid product.
What is the team composition?
We worked with 2–5 teammates from GIMMIR.
How did you come to work with GIMMIR?
Someone referred GIMMIR to me. I chose them over other options because their pricing fit our budget, they had a great culture fit, they offered good value for the cost, and their company values aligned with ours.
How much have you invested with them?
We spent around $10,000–$50,000.
What is the status of this engagement?
We worked together from September 2024–September 2025.
RESULTS & FEEDBACK
What evidence can you share that demonstrates the impact of the engagement?
GIMMIR delivered all the features we needed successfully.
How did GIMMIR perform from a project management standpoint?
GIMMIR delivered everything with great quality and on time. We communicated via virtual meetings, emails, and messaging apps.
What did you find most impressive about them?
GIMMIR's ability to deliver high-quality work on time was impressive.
Are there any areas they could improve?
No, there weren't any.
RATINGS
5.0
"Great company. They delivered us a great product in the best terms and quality"
Quality
5.0
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Mobile App Development for Fitness App
Mobile App Development
Confidential
Feb. 2025 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"They were a very reactive team, and we had easy communication."
Feb 24, 2026
Founder, Redfield LLC
Quentin Randis
Fitness
Spain
11-50 Employees
Online Review
GIMMIR provides full-stack development for a fitness app. The team has built a user backend, workout tracking, a community chat, and a course builder.
GIMMIR has provided great support throughout the project and has a highly skilled staff. The team has delivered on time, and the client retention has improved a lot. The partners communicate via virtual meetings.
BACKGROUND
Introduce your business and what you do there.
I’m the founder of Redfield LLC, a fitness company. We coach busy professionals online through a fitness app.
OPPORTUNITY / CHALLENGE
What challenge were you trying to address with GIMMIR?
We needed to develop a fully functional fitness app for our clients.
SOLUTION
What was the scope of their involvement?
GIMMIR provided full-stack development for iOS and Android devices. I provided the design, and they did all the technical work. The team built a user backend, workout tracking, a community chat, and a course builder.
What is the team composition?
We worked with 2–5 teammates from GIMMIR.
How did you come to work with GIMMIR?
We found them on Upwork. Their pricing fit our budget.
What is the status of this engagement?
We worked together from February–December 2025.
RESULTS & FEEDBACK
What evidence can you share that demonstrates the impact of the engagement?
GIMMIR provided great support throughout the project and had a highly skilled staff. Our client retention improved a lot, and we doubled our LTV.
How did GIMMIR perform from a project management standpoint?
GIMMIR delivered on time. We had virtual meetings.
What did you find most impressive about them?
They were a very reactive team, and we had easy communication.
Are there any areas they could improve?
No, it was perfect.
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
Website Design & Dev for Video Production Firm
Web DesignWeb Development
Less than $10,000
July 2025
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"The balance between quality and price was exceptional, definitely one of the best I had seen on the market."
Oct 5, 2025
Co-Founder, Video Production Firm
Vladyslav Tillmann
Media
Limassol, Cyprus
1-10 Employees
Online Review
GIMMIR developed a website for a video production firm. The team created a modern website design, optimized the website speed, recommended effective promotion strategies, and offered website support.
GIMMIR helped the client receive new leads within a week and receive positive customer feedback about the site's professional, high-end look. The site also enabled the client to build trust, attract more interest, and confidently participate in tenders. Moreover, the team responded promptly.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Co-Founder of a video production firm.
Describe what your company does in a single sentence.
Full-Cycle Video Production Services
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire GIMMIR to accomplish?
To create an effective and high-performing website page designed to attract new clients and streamline customer interactions
SOLUTION
How did you find GIMMIR?
Recommendation
Why did you select GIMMIR over others?
Close to my geographic location
Pricing fit our budget
Good value for cost
How many teammates from GIMMIR were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
The company created a unique and modern design for my website, optimized it for fast loading worldwide, and suggested the right strategies to promote it effectively. Even though I’m not an expert in this field, the team clearly explained every stage of the process, guided me step by step, and offered ongoing service and support for my website. I really appreciated their professionalism, communication, and genuine care about the result.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Within the first week after launch, I started receiving new leads through the website. Many clients mentioned that my platform looked professional and high-end, which helped build trust and attract more interest. The website also became a strong marketing tool for my product and allowed me to confidently participate in tenders that required presenting a portfolio in a web format
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Communication was extremely fast and efficient. We resolved all questions promptly, and the Project Manager clearly explained every detail in a way that was easy to understand. The team was always available and responsive to my needs, which made the whole process smooth and stress-free
What was your primary form of communication with GIMMIR?
Virtual Meeting
What did you find most impressive or unique about this company?
What makes this company unique is their team of true professionals with experience across different industries and niches. They combine strong technical expertise with a clear understanding of business needs, which allows them to deliver practical and effective solutions. The balance between quality and price was exceptional, definitely one of the best I had seen on the market.
Are there any areas for improvement or something GIMMIR could have done differently?
I didn’t notice any significant drawbacks that affected our collaboration. Overall, the project went smoothly and successfully. Since it was a short and not very large-budget project, I wouldn’t point out any particular areas that needed improvement
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
Showing 1-5 of
5 Reviews
Our Story
We started GIMMIR because great companies kept losing months to the hiring cycle. Our team of JavaScript engineers (Next.js, Node.js, React Native, Python) integrates directly into your workflow and ships production code in 2 weeks. No bait-and-switch, no generalists - the engineers you meet are the engineers who build. CEO personally involved in every engagement.
Contact GIMMIR
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