Best Machine Learning Development Companies in Europe

DEPT vs BJSS: full comparison for 2026

Last updated: July 2026

Quick verdict

DEPT (4.0/5) edges ahead of BJSS (3.8/5) overall. DEPT is the better choice for large enterprise brands needing ML-driven marketing personalization at global scale. BJSS is the stronger option for uK public sector and regulated-industry clients needing enterprise-grade AI delivered by a proven long-term consultancy. The right choice depends on your project size, budget, and required tech stack.

DEPT vs BJSS: head-to-head summary

Criterion DEPT BJSS
Founded 2015 1993
HQ Amsterdam, Netherlands Leeds, UK
Team size 1000+ 1000+
Rating 4.0 / 5 3.8 / 5
Best for Large enterprise brands needing ML-driven marketing personalization at global scale UK public sector and regulated-industry clients needing enterprise-grade AI delivered by a proven long-term consultancy
Pricing model Retainer, dedicated team Retainer, dedicated team, fixed project
Min. engagement $75K $50K
Primary tech stack Python, GCP, AWS Python, Java, AWS
Industries served Retail, Media, Enterprise, E-commerce Government, Financial Services, Healthcare, Enterprise

DEPT vs BJSS: overview

DEPT

DEPT, founded in Amsterdam in 2015, has grown into a global digital agency with over 4,000 digital specialists across more than 30 offices on five continents, backed by the Carlyle Group. DEPT's AI-enabled marketing technology platform, Ada, and its Engineering practice deliver machine learning-driven personalization, growth, and data engineering work for major brands including Google, TikTok, and eBay. As a large, private-equity-backed marketing and engineering agency, ML and AI here sits within a much broader full-service offering rather than being the firm's sole focus.

BJSS

BJSS, founded in 1993 and headquartered in Leeds, UK, is a large technology and engineering consultancy with approximately 1,000 employees. BJSS specializes in regulated and complex environments, offering enterprise AI solutions, data science and analytics, machine learning development, cloud-native AI platforms, and intelligent automation for government, financial services, and healthcare clients.

Services and capabilities: DEPT vs BJSS

Capability DEPT BJSS
ML model development
Computer vision
NLP
Generative AI / LLM integration
MLOps
AI strategy consulting
Staff augmentation

Tech stack comparison: DEPT vs BJSS

Framework / platform DEPT BJSS
Python
TensorFlow N/A
PyTorch N/A N/A
AWS
Azure N/A
Kubernetes N/A

Pricing comparison: DEPT vs BJSS

Criterion DEPT BJSS
Minimum engagement $75K $50K
Engagement models Retainer, Dedicated team Retainer, Dedicated team, Fixed project
Rate transparency Minimum disclosed Minimum disclosed
Price tier Accessible Accessible

Target audience comparison: DEPT vs BJSS

Dimension DEPT BJSS
Best company size Startup to mid-market Startup to mid-market
Best industries Retail, Media, Enterprise Government, Financial Services, Healthcare
Best use cases ML-driven marketing personalization at global brand scale, Enterprise data engineering supporting a large media or retail platform Enterprise AI solutions for UK government or public sector clients, Regulated-industry data science and analytics programmes
Typical project type Retainer Retainer

DEPT vs BJSS: pros and cons

DEPT
+ Global scale of over 4,000 specialists across 30-plus offices, unmatched by any other firm on this list
+ Proprietary AI-enabled marketing technology platform, Ada, with proven enterprise brand clients
+ Carlyle Group backing provides financial stability for very large, long-term programmes
+ Named clients include Google, TikTok, KFC, and eBay, indicating enterprise-grade delivery capacity
- ML and AI sits within a much broader marketing and full-service digital agency offering, not a dedicated ML practice
- High minimum engagement size, inaccessible for startups or small businesses
- Enterprise agency structure means less specialized, boutique-style ML research depth
BJSS
+ Over three decades of operating history since founding in 1993, one of the longest-running firms on this list
+ Deep specialization in regulated and complex environments, including UK government and financial services
+ Enterprise-scale delivery capacity of roughly 1,000 staff supports large, high-compliance programmes
+ Established track record beyond ML alone across cloud-native and data platform engineering
- AI and ML is one of several enterprise engineering practices, not the firm's sole specialization
- High minimum engagement size, inaccessible for startups or small businesses
- Enterprise consultancy structure and compliance overhead may slow delivery versus lean boutiques

Who should choose DEPT?

DEPT is the right choice for large enterprise brands needing ML-driven marketing personalization at global scale.

Proprietary AI marketing platform, Ada, and global scale of over 4,000 specialists across 30-plus offices, unmatched by any other firm on this list. Minimum engagement starts at $75K. Works best with clients in Retail, Media, Enterprise, E-commerce.

Who should choose BJSS?

BJSS is the right choice for uK public sector and regulated-industry clients needing enterprise-grade AI delivered by a proven long-term consultancy.

Over three decades of operating history and deep specialization in regulated, complex enterprise environments. Minimum engagement starts at $50K. Works best with clients in Government, Financial Services, Healthcare, Enterprise.

Decision matrix: DEPT vs BJSS

Your situation Recommended choice
You need full-ownership delivery on a defined project scope BJSS
You need a large dedicated team for an ongoing programme DEPT
Your budget is at the lower end BJSS
You need specialist depth in a specific vertical DEPT
You need staff augmentation or team extension Neither; consider alternatives that offer staff aug
You need consulting before committing to a build DEPT

Use case fit: DEPT vs BJSS

Use case DEPT fit BJSS fit Winner
ML-driven marketing personalization at global brand scale Strong Limited DEPT
Enterprise data engineering supporting a large media or retail platform Strong Strong Both equally
Enterprise AI solutions for UK government or public sector clients Strong Strong Both equally
Regulated-industry data science and analytics programmes Limited Strong BJSS
Fixed-price build Limited Limited Both equally
Staff augmentation Limited Limited Both equally

Verdict: DEPT vs BJSS

DEPT (4.0/5) is the stronger overall choice for most Machine Learning Development projects. Proprietary AI marketing platform, Ada, and global scale of over 4,000 specialists across 30-plus offices, unmatched by any other firm on this list. It is best for large enterprise brands needing ML-driven marketing personalization at global scale.

BJSS (3.8/5) is the better choice when uK public sector and regulated-industry clients needing enterprise-grade AI delivered by a proven long-term consultancy. If your situation matches those criteria, BJSS is a competitive option.

Related comparisons

DEPT vs BJSS FAQ

Is DEPT better than BJSS?

DEPT (4.0/5) scores higher overall, but "better" depends on your use case. DEPT is better for large enterprise brands needing ML-driven marketing personalization at global scale. BJSS is better for uK public sector and regulated-industry clients needing enterprise-grade AI delivered by a proven long-term consultancy.

How do DEPT and BJSS differ in pricing?

DEPT uses retainer, dedicated team pricing with a minimum engagement of $75K. BJSS uses retainer, dedicated team, fixed project pricing with a minimum engagement of $50K. Neither firm publishes a full rate card; a discovery call is required for project-specific quotes.

Which is better for enterprise: DEPT or BJSS?

DEPT is the larger team and typically the better enterprise-scale choice. For very large programmes, verify team size and compliance coverage directly with each company before shortlisting.

What are the main differences between DEPT and BJSS?

DEPT's primary differentiator is: proprietary ai marketing platform, ada, and global scale of over 4,000 specialists across 30-plus offices, unmatched by any other firm on this list. BJSS's primary differentiator is: over three decades of operating history and deep specialization in regulated, complex enterprise environments. They also differ in team size (1000+ vs 1000+), minimum engagement ($75K vs $50K), and primary industries served (Retail, Media vs Government, Financial Services).

Last reviewed: July 2026. Verify all details directly with each company before making a decision.