On The Spot Development is a boutique software development company with headquarters in London, UK, and an R&D center in Warsaw, Poland. We specialize in helping fast-growing startups and tech companies build and scale their teams.
Our key services
Offshore Development Center (ODC) We build dedicated R&D teams in Poland on a long-term basis with full cost transparency.
Tech recruitment We source and pre-validate local tech and non-tech professionals for your growing company, even for the toughest roles to fill.
Custom software development We give you an ad-hoc help to rapidly boost your software development, backed by our proven expertise.
CTO as a Service Get access to a fractional CTO on demand, who provides hands-on leadership for your early-stage startup, from roadmap to PoC, MVP, and beyond.
Why On The Spot?
For companies choosing our ODC model, we offer:
100% dedicated team. We don’t reshuffle or reassign people at your own discretion. Your team is fully committed to your goals, working as if they were your own in-house employees.
Full cost transparency. No hidden costs. You get full visibility into team salaries and a clear breakdown of our fees we charge on top.
Long-term collaboration. We build teams that become an extension of your company, fostering strong, lasting relationships. 8 out of 10 of our customers have been with us for over three years.
Freedom to buy out your team. While we value long-term partnerships, we never lock you in. You have the contractual right to buy out your team from day one.
Beyond development
We drive TechSpot, tech events in Poland and online, covering engineering topics from AI to cloud computing and DevOps. More: https://onthespotdev.com/techspot. We also run 137 Podcast, where our Co-founder talks with CTOs, engineers, and tech leaders about real engineering challenges, culture, and AI. Details here: https://www.youtube.com/@137-podcast
Min project size
$25,000+
Hourly rate
$25 - $49 / hr
Employees
50 - 249
Locations
Warszawa, Poland
Year founded
Founded 2016
1 Locations
Warszawa , Poland
No have been added yet...
Pricing Snapshot
Min. project size
$25,000+
Avg. hourly rate
$25 - $49
/hr
Rating for cost
4.7
/5
What Clients Have Said
On The Spot Development offers competitive pricing that fits client budgets, as noted in multiple reviews. Clients appreciate their value for cost, citing efficient team expansion and improved development outcomes, but specific project costs were not disclosed.
On The Spot Development successfully delivers MVPs within expected timeframes, enabling clients to begin user testing and engage with early-stage clients, marking progress toward commercial goals.
Minor Suggestions for Service Clarity
Some clients suggest providing a clear outline of services included in long-term contracts, such as tracking of sickness and holidays, to enhance transparency and client understanding of available support.
Strong Partnership and Support
On The Spot Development is praised for being a great business partner, providing extensive support including payroll, hardware, and bespoke requests, which helps clients focus on core business activities without administrative burdens.
Professionalism and End-to-End Operations
On The Spot Development is recognized for its professionalism in development and operations, including hiring and team building, which impresses clients and contributes to successful project outcomes.
Clear Communication and Adaptability
Clients appreciate the company's clear communication and adaptability, which ensure alignment with business goals and steady project progress despite evolving requirements.
Skilled Team Expansion
The company is noted for helping clients significantly expand their teams with skilled professionals, which accelerates product delivery, improves development efficiency, and supports scaling efforts.
Staff Augmentation Services for Mobile App Dev Company
IT Staff AugmentationMobile App DevelopmentWeb Development
Confidential
Apr. 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"The most impressive thing is no doubt the quality of the whole process."
Jun 26, 2025
CEO & Co-Founder, 44pixels
Adam Stevens
Verified
Other industries
London, England
11-50 Employees
Online Review
Verified
On The Spot Development has provided staff augmentation services for an AI-powered mobile app development company. The team has hired four senior engineers, a visual designer, and a lead QA.
On The Spot Development's work has enabled faster delivery and stronger execution across product, design, and QA. The team has been a great business partner, allowing the client to expand efficiently. The team is sharp and responsible, and the client is happy with the candidate selection process.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the CEO & Co-founder of 44pixels
Describe what your company does in a single sentence.
We develop AI-powered apps for everyday problems
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire On The Spot Development to accomplish?
To build a dedicated product development team that could help us accelerate delivery of AI-based mobile apps and support continuous product iteration.
SOLUTION
How did you find On The Spot Development?
Referral
Why did you select On The Spot Development over others?
High ratings
Close to my geographic location
Pricing fit our budget
Great culture fit
Referred to me
Company values aligned
How many teammates from On The Spot Development were assigned to this project?
6-10 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Since the start of our partnership in April 2024, the 44pixels team has expanded significantly, enabling faster delivery and stronger execution across product, design, and QA.
We’ve hired 4 senior-level engineers, 1 Visual Designer, and 1 Lead Manual QA. This setup allowed us to strengthen core development, introduce structured testing, and elevate the design quality of our products.
44pixels is a mobile app studio focused on building AI-powered applications with thoughtful design and seamless user experience. We combine engineering expertise and creative direction to deliver polished, engaging mobile products that leverage AI technologies.
The team is continuing to grow: we are currently hiring for 3 new roles - a React Native Developer, a Marketing Artist, and a Technical Designer - to support new product streams and scale faster.
With the recent team growth, we have been able to enhance our development capabilities and continue working on new solutions. The team continues to grow with OTS, allowing us to take on more development tasks and improve our processes.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
The project is still ongoing – as a growing startup, we are continuously expanding the team, advancing our product portfolio, and unlocking new verticals. OTS has been a great business partner, allowing us to expand the team efficiently across varying areas of expertise: engineering, design, QA, creative production, and so on. Their candidate selection process is extremely efficient, and, what’s even more important, very customisable, meaning we only spend our time interviewing relevant candidates that have been carefully preselected according to all our specific requirements.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
We do project management in-house, so not directly related to our OTS relationship. As far as their responsibilities are concerned, they have always been very sharp, provided great feedback, proactively requested missing information, and so on. The support they provide for the team is also perfect: we spend 0 time thinking about payrolls, hardware, and all other nuances. Shall we require a corporate event, a visa, and travel support, or any other bespoke ask, OTS is there to help, which is very convenient and saves us a lot of time.
What was your primary form of communication with On The Spot Development?
In-Person Meeting
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
The most impressive thing is no doubt the quality of the whole process, starting from the hiring stages and all the way up to providing the employees with all they need to carry out day-to-day responsibilities. We often hear that OTS is one of the best companies our team members have dealt with.
Are there any areas for improvement or something On The Spot Development could have done differently?
We can always ask for more, of course: more candidates in the pipeline, quicker hiring turnaround, etc, but honestly, it’s so good already - we are completely satisfied with the service as it is.
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
IT Staff Augmentation for Cloud Security Company
IT Staff AugmentationMicroservices Architecture ServicesWeb Development
Confidential
Apr. 2019 - Ongoing
5.0
Quality
5.0
Schedule
4.5
Cost
5.0
Willing to Refer
5.0
"They are very responsive and agile."
Apr 22, 2025
CPO, Cloud Security Company
Anonymous
Verified
Other industries
Tel Aviv, Israel
201-500 Employees
Online Review
Verified
On The Spot Development has provided staff augmentation services for a cloud security company. The goal is to establish an offshore R&D center to support the development of the client's product.
On The Spot Development's work has improved development efficiency by over 40%, reduced costs, and supported strong revenue growth. The team is very responsive and agile. The client is impressed with their professionalism and ability to collaborate on architecture and requirements adaptations.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the CPO of a software company
Describe what your company does in a single sentence.
An industry-leading cloud security solution that provides comprehensive visibility, risk detection, and compliance across cloud infrastructure without the need for agents.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire On The Spot Development to accomplish?
Scaling the R&D Team
Establishing an offshore R&D center to support the development of the product
SOLUTION
How did you find On The Spot Development?
Referral
Why did you select On The Spot Development over others?
Pricing fit our budget
Great culture fit
How many teammates from On The Spot Development were assigned to this project?
55
Describe the scope of work in detail. Please include a summary of key deliverables.
Our collaboration with On The Spot began in 2019 with a team of just two talented front-end developers, focused on building intuitive and responsive user interfaces. As the partnership evolved and our needs grew, we expanded the team to include backend developers, enabling us to scale our platform capabilities and improve system performance. We extended the team recently by bringing on Linux and eBPF specialists, who have since played a crucial role in expanding our product offering. By 2021, the team had grown to 22 members, and today, it boasts over 55 skilled professionals across multiple disciplines. This partnership continues to scale dynamically, reflecting both our shared success and the increasing demand for robust, high-performance software solutions.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
This collaboration has improved development efficiency by over 40%, reduced costs, and supported strong revenue growth. The team’s expansion from 2 developers in 2019 to over 55 today has been key to accelerating product delivery and scaling our impact.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
They are very responsive and agile, great collaborating on architecture and requirements adaptations as well as hiring profiles felxibilty
What was your primary form of communication with On The Spot Development?
In-Person Meeting
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
The professionalism, both on the development side as well as the overall end-to-end operation of hiring, team building and delivering.
Are there any areas for improvement or something On The Spot Development could have done differently?
Nothing that I can recall
RATINGS
5.0
Quality
5.0
Service & Deliverables
Schedule
4.5
On time / deadlines
Cost
5.0
Value / within estimates
Willing to Refer
5.0
NPS
Custom Software Dev for Pharmaceutical Software Company
Custom Software DevelopmentIT Staff AugmentationWeb Development
Confidential
June 2024 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
4.0
Willing to Refer
5.0
"Their blend of technical expertise, clear communication, and adaptability make them a highly reliable partner."
Apr 20, 2025
Director, Aithena Limited
Hank D
Verified
Other industries
United Kingdom
1-10 Employees
Online Review
Verified
On The Spot Development provides development support for a pharmaceutical software company's MVP. The team offers early-stage technical consulting, UI/UX design, API integration, and full product development.
On The Spot Development has delivered a fully functioning MVP within the expected timeframe, enabling the client to begin user testing. The team demonstrates strong project management, maintains clear communication, and provides regular updates. They adapt well to the client's evolving requirements.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Director of Aithena Limited
Describe what your company does in a single sentence.
We build compliance software for the pharmaceutical companies.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire On The Spot Development to accomplish?
Develop an MVP
SOLUTION
How did you find On The Spot Development?
Referral
Why did you select On The Spot Development over others?
High ratings
Close to my geographic location
Pricing fit our budget
Great culture fit
Referred to me
Company values aligned
How many teammates from On The Spot Development were assigned to this project?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Since June 2024, we have partnered with OTS to help us expand our technical team. So far, we have 4 highly skilled engineers through this collaboration, and we are currently continuing to grow the team with additional roles in progress.
We engaged OTS to support the development of our MVP, including the initial proof of concept, for a B2B SaaS platform. Their scope of work included early-stage technical consulting, advising on the most appropriate technology stack to ensure the application was secure, scalable, and fit for purpose. OTS provided both backend and frontend developers who worked collaboratively with our founding team to transform our functional requirements into a working software product. Key deliverables included a proof of concept to demonstrate core functionality, followed by the design and development of a production-ready MVP. This process involved iterative prototyping, UI/UX design, API integration, and deployment to a secure cloud environment. OTS supported us through the full product development lifecycle—from technical discovery and system architecture through to implementation and user testing—ensuring we were able to bring a stable and well-structured MVP to our early users.
With the support of OTS, we’ve been able to scale faster and bring in talent that aligns with our long-term vision. Their recruitment expertise has allowed us to stay focused on product development while ensuring we build a high-caliber engineering team.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
The project delivered a fully functioning MVP within the expected timeframe, enabling us to begin user testing and early-stage client engagement. The proof of concept validated key technical requirements, and the completed MVP provided a solid foundation for pilot discussions with potential users. As a result, we were able to demonstrate product readiness, gather initial feedback, and move confidently into the next phase of development. These outcomes marked clear progress towards our commercial and technical goals.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
OTS demonstrated strong project management throughout the engagement. They maintained clear communication, provided regular updates, and adapted well to our evolving requirements as we refined our product vision. Their responsiveness to our feedback and ability to adjust priorities helped ensure steady progress and alignment with our business goals. Overall, their structured yet flexible approach made them a reliable development partner.
What was your primary form of communication with On The Spot Development?
In-Person Meeting
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
What stood out most was OTS’s ability to grasp our product vision and translate complex requirements into practical, effective technical solutions. Their blend of technical expertise, clear communication, and adaptability make them a highly reliable partner. Additionally, OTS’s commitment to promoting learning and development in the tech space was evident, and we were fortunate to be invited to participate in one of their hosted events.
Are there any areas for improvement or something On The Spot Development could have done differently?
Mionr suggestions only: It would be helpful to have a clearly outlined list of services included as part of a long-term contract hire arrangement, ideally provided in an introductory pack at the start of the engagement. For example, clarifying whether support such as tracking of sickness and holidays is included, along with any additional offerings like English language lessons or ongoing technical training for developers. This transparency would help set expectations and allow clients to fully understand and make the most of the support available.
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