$10,000+
$100 - $149 / hr
100 - 249
Enterprise
Estonia, Tallinn
2015
Within 1 month
Your expectations, lifted

Serokell is a software engineering company that focuses on the development of large-scale and complex IT projects. And our core values reflect our dedication to providing outstanding solutions to our clients:
Innovation: We strive to be at the forefront of technological advancements, constantly exploring new ideas, tools, and methodologies.
Customer-Centricity: Our clients are at the heart of everything we do. We believe in building strong, long-term relationships with our clients based on trust, collaboration, and understanding.
Quality Excellence: We have an unwavering commitment to delivering high-quality software solutions. Our team of skilled developers follows industry best practices and employs rigorous testing and quality assurance processes.
Agility: We embrace an agile software development approach that allows us to adapt quickly to changing requirements and market dynamics.
Collaboration: We believe in the power of collaboration. We work closely with our clients, involving them in every stage of the development process. By fostering open communication and active collaboration, we ensure that our solutions align with our clients' vision and business objectives.
Continuous Improvement: We actively seek feedback from our clients and internal teams, striving to learn from every project and incorporate valuable insights into our future endeavors. This commitment to continuous improvement enables us to deliver increasingly superior software solutions.

These business values form the foundation of our company and guide us in delivering exceptional software development services to our valued clients. We are passionate about leveraging technology to drive business growth and success, and we are ready to embark on every software development journey with a focus on excellence, collaboration, and innovation.

Your expectations, lifted

Сompany presentation

Techreviewer rating

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4.9

Client review platforms

The company's reputation is reflected through ratings and reviews from different review websites:

4.9
(33 reviews)Clutch
5.0
(5 reviews)GoodFirms
5.0
(10 reviews)Google

AI Overview

Powered bytechreviewer AI
This company performance overview is based on AI analysis of 38 client reviews across 2 different review platforms. Read more about our methodology.
Last updated: April 2026

Performance snapshot

Serokell is a technically specialized software development firm with a strong focus on blockchain, AI/ML, and functional programming (Haskell, Rust, TypeScript). Across 38 reviews spanning multiple platforms, the vendor earns predominantly Strong ratings, with near-unanimous perfect scores on quality, schedule, and willingness to refer. One notable exception is a lower-rated engagement that flagged scheduling and leadership gaps, introducing a minor Mixed signal in project management. Overall, the evidence base is robust, recent, and anchored by multiple high-density reviews with quantified outcomes.

Performance breakdown

Technical expertise
Strong

Multiple high-density reviews confirm deep proficiency in Haskell, Rust, Solidity, Python, TypeScript, and ML modeling. Clients across blockchain, AI, pharma, and aerospace consistently cite technical depth as a standout differentiator, with no major negative mentions regarding technical quality.

Project management & delivery
Mixed

The majority of reviews report on-time delivery and well-organized workflows including sprint reviews and weekly reports. However, one engagement explicitly cited the absence of a team leader and a schedule sub-rating of 3.0, introducing a documented delivery concern that prevents a fully Strong rating.

Communication & collaboration
Strong

Reviewers consistently praise responsiveness and transparency across Slack, Zoom, Telegram, and email. Multiple clients highlight daily or weekly touchpoints and proactive updates, with one government agency review noting minor cross-group alignment challenges that did not affect the overall positive communication pattern.

Reliability
Strong

Serokell delivers stable, issue-free products in the majority of engagements. The smart contract audit client confirmed five contracts were audited with no critical issues flagged post-delivery, and a cryptocurrency platform client noted the developed platform had no problems, reflecting strong product stability across technical domains.

Client satisfaction & outcomes
Strong

Quantified outcomes appear across multiple anchor reviews: a 10–15% improvement in error correction for an air mobility client, a 35% reduction in IT downtime and 99.9% system availability for a pharma client, and a 10%+ reduction in ML classification error rates for a lending company, confirming consistent ROI delivery.

Best for

Serokell is best suited for technically complex engagements in blockchain development and auditing, AI/ML modeling, and functional programming environments. It is a strong fit for fintech, DeFi, and deep-tech startups requiring precision, research-grade expertise, and flexible collaboration.

Clients info

Serokell serves clients primarily in financial services, blockchain and DeFi, AI/ML technology, and life sciences. Client sizes range from early-stage startups (1–10 employees) to large enterprises with over 10,000 employees, with the majority falling in the 11–200 employee range. Project budgets most commonly fall between $50,000 and $999,999, with a few engagements exceeding $1,000,000. Primary industries represented include Financial services & DeFi, Blockchain & cryptocurrency, Artificial intelligence & machine learning, Life sciences & biotechnology, Information technology. Typical client size bands include 1–10 employees, 11–50 employees, 51–200 employees, 201–500 employees, 10,001+ employees. Common project budget ranges include $10,000 to $49,999, $50,000 to $199,999, $200,000 to $999,999, $1,000,000 to $9,999,999.

Review strength

Analysis is based on 38 reviews across 2 platforms. The majority of reviews are recent, with the latest dated February 2026 and a substantial cluster from 2023–2025. A smaller subset of reviews dates to 2019–2020, which are more than four years old and carry lower evidentiary weight for current vendor assessment. Review date range: Mar 2018 - Feb 2026.

Performance breakdown

Technical expertise
Strong

Multiple high-density reviews confirm deep proficiency in Haskell, Rust, Solidity, Python, TypeScript, and ML modeling. Clients across blockchain, AI, pharma, and aerospace consistently cite technical depth as a standout differentiator, with no major negative mentions regarding technical quality.

Project management & delivery
Mixed

The majority of reviews report on-time delivery and well-organized workflows including sprint reviews and weekly reports. However, one engagement explicitly cited the absence of a team leader and a schedule sub-rating of 3.0, introducing a documented delivery concern that prevents a fully Strong rating.

Communication & collaboration
Strong

Reviewers consistently praise responsiveness and transparency across Slack, Zoom, Telegram, and email. Multiple clients highlight daily or weekly touchpoints and proactive updates, with one government agency review noting minor cross-group alignment challenges that did not affect the overall positive communication pattern.

Reliability
Strong

Serokell delivers stable, issue-free products in the majority of engagements. The smart contract audit client confirmed five contracts were audited with no critical issues flagged post-delivery, and a cryptocurrency platform client noted the developed platform had no problems, reflecting strong product stability across technical domains.

Client satisfaction & outcomes
Strong

Quantified outcomes appear across multiple anchor reviews: a 10–15% improvement in error correction for an air mobility client, a 35% reduction in IT downtime and 99.9% system availability for a pharma client, and a 10%+ reduction in ML classification error rates for a lending company, confirming consistent ROI delivery.

Location and contacts

Estonia, Tallinn
Pille tn 7/5-13, Kesklinna linnaosa, Harju maakond,
10135
United States, San Francisco
415 Mission Street United States
94105
+14156760487

Major clients

Tocqueville Group
IOHK
Insolar
POA Network
DISCIPLINA
OmegaMedia
BIOCAD
Ligo
Yakkertech