Product engineering for fintech & complex products
Base Blocks tech is a product engineering studio for fintech and other complex, data-heavy products. We work as a senior, embedded product team for founders and CTOs — the same engineers who shape the architecture stay with the product for years, shipping features and owning outcomes long after launch.
Since 2019, we've built and scaled fintech and data-heavy products end-to-end. For ICLUB, we automated KYC verification (5-7 days down to ~50 seconds) and built the mobile-first platform now managing €120M+ in assets for 25,000+ investors. For Asset Camp, we took a market-analytics tool from MVP to a SaaS platform used by 1,000+ investors and advisors. For DocBay, we built a two-sided healthcare marketplace with booking, teleconsultations, and clinic tools, launched in Portugal and expanded to France. We've also built a compliance-focused ETL module for a RegTech platform processing millions of records daily with encryption and audit logging.
Our core stack is Node.js, TypeScript, React and React Native, Java (Spring), AWS and Google Cloud, Kafka, PostgreSQL, Redis, and BigQuery. We use AI to speed up delivery and cut manual work — a practical multiplier on senior engineering judgment, not a buzzword.
We work in two modes: full-cycle product builds, from architecture through production, and dedicated product teams for companies that need continuous ownership of an existing platform.
Both are led directly by senior engineers working with founders and technical leadership — no junior staff reporting up a chain. Clients consistently point to the same things: clear communication, flexibility, meeting deadlines, and a team that pushes back on requirements rather than quietly building the wrong thing.
Small, senior team by design — fewer, deeper client relationships instead of high turnover across many accounts. If your product involves financial data, complex logic, or both, let's talk.
Base Blocks tech offers reasonable pricing and good value, with project costs noted at around $150,000 for a marketing tool. Clients appreciate their flexibility, responsiveness, and effective communication. Overall, they are viewed as a reputable company with strong technical capabilities.
One review mentioned difficulties caused by time zone differences, suggesting it as an area for potential improvement.
Efficient in Handling Complex Projects
The team handled complex projects involving large data processing and integrations with third-party APIs efficiently, delivering robust and scalable solutions.
Effective Project Management
Clients appreciated Base Blocks tech’s project management, utilizing tools like Jira, Slack, and ClickUp. They met deadlines and integrated well with clients’ systems.
Positive Stakeholder Feedback
Clients received positive feedback from stakeholders about the products developed by Base Blocks tech, indicating satisfaction with the end results.
Collaborative and Responsive Team
Reviews highlight the team’s collaborative nature, responsiveness, and their ability to work independently while improving requirements and adapting to client needs.
Expertise in Multiple Technologies
Base Blocks tech demonstrated expertise in various technologies including React, BigQuery, Google Cloud, Spring Framework, Kafka streams, AWS, and more.
Backend Development for Software Development Company
Custom Software DevelopmentWeb Development
NodeJSJavaScript
Confidential
Oct. 2020 - Apr. 2021
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
“Base Blocks tech was technically capable and willing to help us improve the platform.”
Jul 12, 2022
CEO, IronUp
Garrett Schemmel
Verified
Other industries
Atlanta, Georgia
1-10 Employees
Phone Interview
Verified
A software development company was looking for good backend developers. For six months, Base Blocks tech worked on building significant features from scratch using Node.js and JavaScript.
Internal stakeholders were satisfied with Base Blocks tech’s performance and service. They managed the project successfully using Jira and Slack, and the team was collaborative, skilled, and responsive. Overall, they were independent and willing to put in extra effort to improve the requirements.
A Clutch analyst personally interviewed this
client over the phone. Below is an edited
transcript.
BACKGROUND
Introduce your business and what you do there.
I was the CEO and founder of IronUp.
OPPORTUNITY / CHALLENGE
What challenge were you trying to address with Base Blocks tech?
We were looking for good backend developers.
SOLUTION
What was the scope of their involvement?
We went through some significant feature developments with Base Blocks tech over 3–6 months. We brought them on specifically to do backend development, and their team reported to our lead developer. They worked with Node.js and JavaScript; we didn’t use a CMS platform.
What is the team composition?
We worked with the founder and another backend developer.
How did you come to work with Base Blocks tech?
We found them through Upwork. We did some random skill-based tests, and they passed them.
What is the status of this engagement?
We worked with them from October 2020–April 2021.
RESULTS & FEEDBACK
What evidence can you share that demonstrates the impact of the engagement?
They were a good team. They were collaborative, skilled, and responsive. Base Blocks tech was technically capable and willing to help us improve the platform.
How did Base Blocks tech perform from a project management standpoint?
They used Jira and Slack to communicate.
What did you find most impressive about them?
They were collaborative and relationship-based. Overall, they were willing to improve the requirements. They didn’t blindly do something when it was wrong, which is a problem with other development firms.
Are there any areas they could improve?
No, there wasn’t anything.
Do you have any advice for potential customers?
I recommend Base Blocks tech. Give them a call.
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 Digital Marketing Agency
Custom Software Development
React
$50,000 to $199,999
May 2021 - Ongoing
5.0
Quality
4.5
Schedule
5.0
Cost
4.5
Willing to Refer
4.5
"They’re personable and flexible; they make an effort to relate themselves to our team and adapt to our work style."
Jun 22, 2022
Founder, Digital Marketing Agency
Anonymous
Verified
Advertising & marketing
Seaside, New York
Phone Interview
Verified
Base Blocks tech has helped a full-service digital marketing agency build a conversion intelligence tool from the ground up. Key technologies used are React, BigQuery, and Google Cloud.
The client is pleased with the end product, which has received positive feedback from stakeholders. Base Blocks tech adapts seamlessly to the internal team’s workflow, allowing for a smooth and delay-free collaboration. Overall, customers can expect a reliable and flexible partner.
A Clutch analyst personally interviewed this
client over the phone. Below is an edited
transcript.
BACKGROUND
Introduce your business and what you do there.
I’m the founder of a marketing agency.
OPPORTUNITY / CHALLENGE
What challenge were you trying to address with Base Blocks tech?
I was looking for a software team to help us build a conversion intelligence tool.
SOLUTION
What was the scope of their involvement?
Base Blocks tech has been helping us build our product from scratch. They’ve developed the product roadmap and handled the front- and backend development efforts. They use React for the frontend along with other key technologies, such as BigQuery and Google Cloud. They also conducted natural language processing (NLP) as well.
What is the team composition?
I work with several people from their team, including Oleksii (CEO), their CTO, and four developers.
How did you come to work with Base Blocks tech?
I found them through an online search.
How much have you invested with them?
We’ve spent around $150,000 USD.
What is the status of this engagement?
We started working with them in May 2021, and our collaboration is still ongoing.
RESULTS & FEEDBACK
What evidence can you share that demonstrates the impact of the engagement?
They’ve built us a working product, and we’ve gotten a lot of positive feedback about it.
How did Base Blocks tech perform from a project management standpoint?
Their project management style is good. They’ve integrated well with our own project management system and working style and met all deadlines. We use ClickUp to manage tasks and communicate mainly through Zoom and Slack.
What did you find most impressive about them?
They’re personable and flexible; they make an effort to relate themselves to our team and adapt to our work style. They’ve also got a good understanding of our business use cases.
Are there any areas they could improve on?
The time zone difference made things a little difficult at times.
Do you have any advice for potential customers?
I recommend working with them — they’re a reputable company for a reason.
RATINGS
5.0
Quality
4.5
Service & Deliverables
Schedule
5.0
On time / deadlines
Cost
4.5
Value / within estimates
Willing to Refer
4.5
NPS
Module Development for Software Company
Custom Software Development
$10,000 to $49,999
May 2021 - Jan. 2022
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"Their good quality output allowed us to meet our deliverables for 2021."
Feb 21, 2022
CXO, Software Company
Akhil Singh
Verified
Other industries
Washington, District of Columbia
11-50 Employees
Online Review
Verified
Base Blocks tech provided software development for a software company. They implemented module improvements and integrations with third-party APIs.
Base Blocks tech’s high-quality development was instrumental in helping the client hit their yearly goals. They offered outstanding communications and hit all their deadlines. They were flexible, adaptive, and willing to work despite constraints.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
Founder of a software company
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Base Blocks tech, and what were your goals?
Enhancements to our existing modules, development of new modules
SOLUTION
How did you select this vendor and what were the deciding factors?
Technology stack expertise, communication skills, responsiveness
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
Developed scheduling enhancements, integration with 3rd party APIs
How many people from the vendor's team worked with you, and what were their positions?
2 people. Architect and Developer
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
Good quality output allowing us to meet our deliverables for 2021 goals
Describe their project management style, including communication tools and timeliness.
Regularly met their deadlines; communication was great.
What did you find most impressive or unique about this company?
Flexibility and willingness to work within the constraints.
Are there any areas for improvement or something they could have done differently?
Not really
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 Dev for Regulatory Tech Solutions Provider
Custom Software Development
$10,000 to $49,999
June 2020 - Oct. 2021
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"They possessed the knowledge we needed. Most importantly, we had a clear and concise communication process."
Jan 18, 2022
IT Head, Regulatory Tech Solutions Provider
George Assimenos
Verified
Financial services
Limassol, Cyprus
11-50 Employees
Online Review
Verified
Base Blocks tech developed a new module for a regulatory tech solutions provider's custom software. Technologies used include AWS, Spring Framework, and more.
Base Blocks tech finished a product that could process millions of records daily. They were organized with a clear and concise communication process. Overall, the client found no area of improvement.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
Head of IT at a RegTech company with offices in Cyprus and UK.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Base Blocks tech, and what were your goals?
We hired Base Blocks to develop a new ETL like module for our platform.
SOLUTION
How did you select this vendor and what were the deciding factors?
We worked with Base Blocks on various smaller projects in the past. They have been always very reasonable with their cost and time estimations.
Describe the scope of work in detail, including the project steps, key deliverables, and technologies used.
Base Blocks were involved from the early design stages and built the module from scratch. They presented various solutions and we selected together the technology stack to be used. The project had its own API built with Spring Framework, Kafka streams, encryption, audit logging and a robust error handling, leveraging AWS infrastructure.
How many people from the vendor's team worked with you, and what were their positions?
We had 2 full time developers. At some point we had up to 4 team members.
RESULTS & FEEDBACK
Can you share any measurable outcomes of the project or general feedback about the deliverables?
The module developed is processing millions of records daily.
Describe their project management style, including communication tools and timeliness.
Requirements were discussed in advance and the deadlines we set, were met on time. We had a weekly meeting to monitor the progress of the project over Google Meet. For clarifications we usually used Skype/Slack.
What did you find most impressive or unique about this company?
They were very organized. They possessed the knowledge we needed. Most importantly, we had a clear and concise communication process.
Are there any areas for improvement or something they could have done differently?
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