Since 2015 we've worked where failure is expensive: inference infrastructure under live traffic, protocols moving billions, trading and settlement backends, lab instruments, drones. 60+ engineers, many with graduate degrees in maths and computer science. 90%+ client retention.
Most teams can ship a prototype in days now. What they can't do cheaply is build a system that holds up on year three - under load, under audit, after the original authors have left. That's our part.
WHAT WE DO
Audit and risk assessment. Architecture, security, performance, smart contracts, and AI-generated codebases. Teams generate a system fast, run it past AI reviewers, and still need someone to reconstruct what it's meant to do. Two independent auditors, threat modelling, findings with severity and repro steps, re-audit after your fixes.
Reliable AI systems. Inference infrastructure, retrieval pipelines, evals and regression testing for model behaviour, cost-per-token work - plus the unglamorous half: making features fail safely when the model is wrong.
Stabilise and harden. Systems that run but cost too much, scale badly, or break under load. Performance, SRE, incident readiness, migration off code nobody can maintain.
Build critical components. Settlement and trading backends, consensus and protocol work, hardware and scientific software. Rust, Nix, Python, TypeScript, Haskell; formal methods where risk justifies them.
HOW WE ENGAGE
Risk audit - fixed price and scope, prioritised roadmap of what will break. Hardening milestone - tied to a measurable target (latency, uptime, inference cost), not logged hours. Embedded experts - a small senior team owning closed scopes alongside yours. A C-level engineer owns every engagement and doesn't rotate off.
SEROKELL is recognized for providing good value for cost, with project investments ranging from $50,000 to over $700,000. Clients appreciate their expertise, timely delivery, and flexibility in project management, indicating a positive return on investment across various projects.
SEROKELL is committed to ensuring client success, often going beyond the scope of work to provide additional support and expertise, which clients find invaluable.
Effective Project Management
SEROKELL generally delivers projects on time and maintains clear communication with clients. Their project management is often described as proactive, structured, and responsive, contributing to successful outcomes.
Impressive Problem-Solving Capabilities
Clients highlight SEROKELL's problem-solving skills, particularly in developing innovative solutions to technical challenges and providing valuable insights during project execution.
Expertise in Complex AI and ML Solutions
SEROKELL is highly praised for their technical expertise in AI and machine learning solutions, including custom semantic search APIs and smart contract development. Clients appreciate their ability to handle complex data problems efficiently.
Flexibility and Adaptability
SEROKELL is noted for their flexibility in adapting to changing project requirements and business needs. Clients appreciate their willingness to adjust project scopes and provide timely solutions.
Challenges with Initial Project Scoping
Some clients noted challenges with initial scoping and planning phases, suggesting room for improvement in aligning expectations and timelines from the start.
ML Model Training for Investment Consulting Company
AI Development
Machine LearningNatural Language Processing
$50,000 to $199,999
Oct. 2023 - Jan. 2024
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"What stands out is their visionary technique."
Feb 2, 2024
Founder & CEO, Agecroft Partners
Don A. Steinbrugge
Financial services
Richmond, Virginia
1-10 Employees
Online Review
An investment consulting firm hired SEROKELL to train a machine learning model to break down queries into campaign settings. The team worked on features that gave users helpful PPC details using the queries.
Thanks to SEROKELL, the client’s product allowed users to handle hundreds of user queries simultaneously. It also produced tailored AI-driven campaigns. The team managed the engagement excellently. Their resources completed tasks on time and were highly responsive to the client’s changing needs.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Founder and CEO of Agecroft Partners
Describe what your company does in a single sentence.
Agecroft Partners is an investment consulting and third-party marketing firm that focuses on connecting hedge funds, asset managers, and institutional investors.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire SEROKELL to accomplish?
We developed an advertising platform that automates the targeting process in ad campaigns through sophisticated keyword analysis. This system is capable of pinpointing desired audience segments with minimal to no manual input. Our goal was to develop a solution that could independently identify the target audience for a campaign, simply based on user requests in plain language.
Additionally, we wanted it to be scalable, ensuring it could support a high volume of users at the same time.
SOLUTION
How did you find SEROKELL?
Referral
Why did you select SEROKELL over others?
High ratings
Great culture fit
Referred to me
Company values aligned
How many teammates from SEROKELL were assigned to this project?
5
Describe the scope of work in detail. Please include a summary of key deliverables.
Serokell developers trained the ML model to break down a user's query into organized segments of structured language and identify the key elements. Following this, every client query is converted into specific campaign settings. As a result, users marketers can provide simple wishes about PPC campaign details; all necessary information is gathered directly from a query expressed in everyday conversational English.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
This automation of operational processes allows the client to handle hundreds of user queries concurrently and tailor the AI-driven context add campaign (CPC) settings to their specific needs. The solution offered by Serokell significantly enhances the efficacy of digital advertising campaigns for the customer.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
Project management underneath Serokell's steerage became characterized with the aid of excellence, with consistent delivery of gadgets on time table and a high level of responsiveness to our evolving desires. Their technique struck a harmonious stability between timeliness, adaptability, and a clear understanding of our mission targets.
What was your primary form of communication with SEROKELL?
Virtual Meeting
Email or Messaging App
What did you find most impressive or unique about this company?
What stands out is their visionary technique, no longer simply addressing modern-day wishes but suggesting strategic and scalable solutions that resonate with our long-term desires. Their ability to look the larger photograph is a testomony to their dedication to turning in solutions that benefit us nowadays and in the destiny.
Are there any areas for improvement or something SEROKELL could have done differently?
No flaws, We are extremely happy with our collaboration.
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 Binary Cache Hosting Company
Custom Software Development
Confidential
Nov. 2022 - Jan. 2023
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"They understood the requirements and delivered."
Aug 30, 2023
Founder, Cachix
Domen Kožar
Verified
Other industries
Slovenia
1-10 Employees
Online Review
Verified
A binary cache hosting company hired Serokell to develop open-source components. The team's tasks included adding an intermediate presentation, a JSON output, and Zstandard compression to executable files.
The client was happy with the progress made by Serokell throughout the project. The team was constantly available for the client's questions and communicated effectively through visual meetings when needed. Serokell's understanding of the requirements led to accurate delivery.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Founder of Cachix
Describe what your company does in a single sentence.
We host Nix binary caches.
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire Serokell to accomplish?
To help us with software development of open source components
SOLUTION
How did you find Serokell?
Referral
Why did you select Serokell over others?
Pricing fit our budget
Referred to me
How many teammates from Serokell were assigned to this project?
1 Employee
Describe the scope of work in detail. Please include a summary of key deliverables.
add intermediate presentation of nix-diff
add json output for nix-diff
add zstd compression support to cachix
fix nar serialization logic in hnix-store
customer.io SDK development
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
We decided on a list of tasks and a time frame. There was a lot of progress done for those two months.
Describe their project management. Did they deliver items on time? How did they respond to your needs?
They were always around to respond and answer any questions. In general we didn't have communication every day, just when needed.
What was your primary form of communication with Serokell?
Virtual Meeting
What did you find most impressive or unique about this company?
There wasn't much communication needed, they understood the requirements and delivered.
Are there any areas for improvement or something Serokell could have done differently?
They didn't really know when exactly the project would start, but that's also understandable since they needed to find the right person and allocate them.
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
DL Model Development for Media & Audiences Platform
AI DevelopmentCustom Software Development
Confidential
Sep. 2021 - May 2022
4.0
Quality
4.5
Schedule
3.0
Cost
4.0
Willing to Refer
3.5
"The Serokell team did their best to satisfy us."
Mar 2, 2023
Data Science Team Leader, start.io
Assa Efraim
Verified
Media
Netanya, Israel
51-200 Employees
Online Review
Verified
Serokell built deep learning (DL) models and natural language processing (NLP) workflows for a media and audience platform. They worked collaboratively in developing the features.
Serokell developed the features following the client's technical requirements and target ratings. Despite their lack of a team leader, they did their best to meet the delivery expectations. Serokell was responsive, and they led a fluent offboarding process.
The client submitted this review online.
BACKGROUND
Please describe your company and position.
I am the Data Science Team Leader of start.io
Describe what your company does in a single sentence.
Media and Audiences Platform
OPPORTUNITY / CHALLENGE
What specific goals or objectives did you hire Serokell to accomplish?
NLP - POS
NLP - Keywords Classification
SOLUTION
How did you find Serokell?
Online Search
Why did you select Serokell over others?
High ratings
Pricing first our budget
What was the size of Serokell’s team?
2-5 Employees
Describe the scope of work in detail. Please include a summary of key deliverables.
Consultant and development of DL models and workflows in the NLP scope.
RESULTS & FEEDBACK
What were the measurable outcomes from the project that demonstrate progress or success?
Number of developed features
Accuracy and hit rating
Describe their project management. Did they deliver items on time? How did they respond to your needs?
The lack of a Team Leader from Serokell's team in the second half of the project formed a gap between our delivery expectations to the real achievements. In the first half, things were much better. The Serokell team did their best to satisfy us.
What did you find most impressive or unique about this company?
The management is very responsive. The offboarding process was fluent, and the team left all the required information,
What was your primary form of communication with Serokell?
Virtual Meeting
Email or Messaging App
Are there any areas for improvement or something Serokell could have done differently?
As a consultant team, I expect Serokell to have a dedicated team leader without extra billing. Eventually, we paid for a project, and the vendor should hit the target and manage its human resource without involving us in these considerations.
RATINGS
4.0
Quality
4.5
Service & Deliverables
Schedule
3.0
On time / deadlines
Cost
4.0
Value / within estimates
Willing to Refer
3.5
NPS
Backend Development for Healthcare Startup
Custom Software Development
$10,000 to $49,999
Dec. 2019 - Ongoing
5.0
Quality
5.0
Schedule
5.0
Cost
5.0
Willing to Refer
5.0
"The most impressive thing about the team was the immense technical expertise the employees and managers showed."
Apr 23, 2020
Founder, Training App Healthcare Startup
Jennifer Cathy
Other industries
London, England
1-10 Employees
Online Review
Serokell OÜ developed the backend of a training app using Haskell. The made sure that the solution could quickly process user data to recommend the appropriate training program.
Beyond completing the project as specified, Serokell OÜ created an algorithm that saved resources and maximized results. The team remained organized throughout the process, delivering weekly summary reports and demo reviews following sprints. Technical knowledge and flexibility were key to success.
The client submitted this review online.
BACKGROUND
Please describe your company and your position there.
We are a tech startup that helps users create an individual training program based on different human parameters and lifestyle factors.
OPPORTUNITY / CHALLENGE
For what projects/services did your company hire Serokell OÜ?
We hired Serokell OU for backend development services.
What were your goals for this project?
We wanted to release our individual training app. While we had a great design and frontend, we realized that our backend was lacking and wouldn’t be able to support our users’ needs in the long term. Therefore, we sought an experienced team to research and implement superior recommendation algorithms and handle the backend.
SOLUTION
How did you select this vendor?
We did market research, asked for references, and sent an RFP to about 15 firms. Serokell was among the first to respond.
Describe the project and the services they provided in detail.
We wanted to create an app that could provide our users with an individual training program based on several personal variables such as human attributes and lifestyle data. The team handled all the backend development, implementing a fast and reliable backend in Haskell to quickly process our users’ data.
What was the team composition?
Their team consisted of a project manager and several backend developers. They also appointed a QA resource and staff to overview the project. During the development process, I worked directly with the project manager that they provided.
RESULTS & FEEDBACK
Can you share any information that demonstrates the impact that this project has had on your business?
It's been a pleasure to work with Serokell. They assisted us with backend development and have successfully accomplished the initial goal. One of the highlights was that they managed to create an awesome algorithm to save resources and give maximum results. They showed great standards of technical knowledge and competence as well as flexibility in order to reach the intended outcome.
How was project management arranged and how effective was it?
Serokell offered highly-organized daily catch up meetings, weekly summary reports, and end of sprint demo reviews. I would say such workflow processes have hugely contributed to the successful realization of the project's goals.
What did you find most impressive about this company?
The most impressive thing about the team was the immense technical expertise the employees and managers showed in their respective areas. Each technical decision was clearly communicated and explained to us in a manner unlike the development firms I have encountered before.
Are there any areas for improvement?
I wish we had a bigger project team so maybe we could have finished the development a bit faster.
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 31-34 of
34 Reviews
Our Story
We are Serokell — a research-driven software team fusing academic rigor with industry delivery since 2015. Our engineers and researchers specialize in AI/ML, Big Data, blockchain, SRE and formal verification (Haskell, Rust, Nix). We’ve shipped fintech, biotech, oil & gas and marketplace systems, contributed to Tezos, Cardano, TON, and GHC, won major smart-contract contests, open‑sourced tools like Edna and deploy-rs, and mentor talent through courses, labs and scholarships.
Verified means Clutch independently confirmed SEROKELL is a legally registered business, has had its financial risk status checked (Creditsafe: High Risk), and is backed by 31 verified client reviews averaging 4.9 stars.
*Clutch performed additional verification on this company and confirmed that there are no negative legal filings or large outstanding debts. This company has also received 3 or more verified reviews on our platform.
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