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4.9 out of 5, based on 18 real reviews.
4 Companies | Rankings updated: Dec 16, 2025

Atchai

Atchai

Data science and AI product development

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Atchai is a London, UK-based, award-winning data science firm that was founded in 2010 and specializes in conversational AI, machine learning, data science, and natural language processing. For the Bank of England, Cabinet Office, NHS, Unilever, Danone, UEFA, Turner Broadcasting, Internews Europe, and other smaller but aspirational tier-1 VC-backed businesses, we have successfully developed solutions that serve millions of people. Agile methodology, user-centered design, and innovative technology are the driving forces behind our work. Our staff, which is managed by Dr. Enrique Munoz de Cote and John Griffin, is what sets us apart; each member is an expert in their field with top-notch credentials to support it.

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50% AI Development
25% PyTorch Development
Inside Service Listing

$100-$149/hr

Inside Service Listing

$50,000+

Inside Service Listing

2 - 9

Inside Service Listing

London, London, UK

Vention

Vention

Engineering peace of mind

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As a software development company with 20+ years in the field, Vention provides innovative services to startups and large enterprises. We tackle projects of any complexity and size, delivering outstanding solutions that help clients focus on business expansion and new opportunities. With 3K+ dedicated developers globally, we match clients with top engineering talent in time zones that align seamlessly with their unique needs. Our impressive track record: We've worked with 500+ industry-leading clients, including PayPal, IBM, Mount Sinai, PwC, and Postman Our work has contributed to $15B+ in client acquisitions. Clients typically save up to $600K annually with us. With an average client relationship exceeding 36 months, our enduring partnerships speak to consistent client satisfaction. Our longest client engagement has lasted 16 years. We provide end-to-end software development expertise, covering the entire engineering spectrum, from initial concept creation to final delivery and refinement. Custom software development Web and mobile development QA and testing Cloud & DevOps eCommerce AR/VR AI Blockchain

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10% AI Development
20% PyTorch Development
Inside Service Listing

$50-$99/hr

Inside Service Listing

$25,000+

Inside Service Listing

1,000 - 3,000

Inside Service Listing

London, London, UK

9NEXUS

9NEXUS

The IT Staff Augmentation Company

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Our specialty is assisting technology firms in creating remote engineering teams that function as an extension of their internal team. We were founded in London, UK, in 2011. Across a wide range of industries, including corporate SaaS, life sciences, healthcare, real estate, fintech, infrastructure & security, and many more, we have collaborated with a number of satisfied clients. In addition to their coding skills, our engineers are proficient in cross-platform interfaces, feel at ease working from start to finish, and consider the infrastructure as well as the final result. As a committed member of your team, we offer skilled offshore developers. We can get you going in days, not months, whether you're looking to hire one person or a whole extended team.

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25% AI Development
15% PyTorch Development
Inside Service Listing

$25-$49/hr

Inside Service Listing

$1,000+

Inside Service Listing

10 - 49

Inside Service Listing

London, London, UK

Timspark

Timspark

Software Development & IT Consulting Company

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Timspark is a UK-registered custom software development partner with delivery centers across Europe (Poland, Lithuania, Georgia) and a distributed presence including Latvia. We bring together 1,000+ vetted engineers and 30+ pre-built teams, serving 200+ clients across finance, healthcare, retail, logistics, manufacturing, and more. How we engage We offer Core Teams (pre-built, domain-savvy units with clear ownership), Dedicated Teams, Team Augmentation, full-cycle product development, and technology consulting—so you can choose the level of responsibility and speed you need. What we’re known for Real-time application enablement — low-latency features (e.g., live updates, chat) with Azure SignalR and robust auth patterns. Legacy ? cloud-native modernization — re-platforming (e.g., from JBoss) to AWS/Azure/GCP for maintainability and scale. CI/CD & tooling optimization — pipeline reliability and faster releases (repo migration, Dockerized Bamboo agents). Scalable architecture refactors — microservices & microfrontends, Kafka eventing, Redis caching, optimized SQL, Jenkins. Industrial IoT pipelines — secure MQTT telemetry, Docker on GCP, PostgreSQL for production-grade device data. Selected recent work Microlearning platform — React portal with AWS Cognito, Node.js/TypeScript + MongoDB, Stripe billing; Flutter apps; piloted at a corp. with ~80,000 employees. Game studio acceleration — Unity/C# titles with AWS-backed services; our engineers embedded as part of the client’s team. Carbon-capture IoT — production telemetry on GCP with MQTT, Docker; Python/FastAPI and Looker dashboards for real-time operations. Salesforce OmniStudio QA — E2E testing across policy lifecycles; Angular 17 front-end tests, .NET 8 unit tests; release confidence across US/CA templates. Point-cloud ? BIM automation — deep-learning segmentation (Pointcept) with exports into Revit/AutoCAD/BIM 360; hours-to-days cycle time instead of weeks. Supply-risk analytics for pharma — Snowflake CDW with Talend/dbt pipelines and Tableau dashboards; Cybersecurity platform scale-up — MongoDB ? PostgreSQL migration, microservices/microfrontends, Kafka + Redis, Jenkins CI/CD, React TS; faster queries, safer rollouts, lower infra spend. Technology coverage We work across modern web, mobile, cloud (AWS, Azure, GCP), Salesforce, data/ML (TensorFlow, PyTorch, MLflow), BI (Power BI, Looker, QuickSight, Tableau), and a broad language stack (.NET/C#, Java, Python, Node.js/TypeScript, Go, React, Kotlin/Swift, Flutter).

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20% AI Development
10% PyTorch Development
Inside Service Listing

$25-$49/hr

Inside Service Listing

$10,000 - $30,000

Inside Service Listing

50 - 200

Inside Service Listing

London, London, UK

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