JData Consulting — From Data Complexity to Business Clarity
FROM DATACOMPLEXITYEnd-to-end data platform builds for high-growth companies.
From architecture to real-time pipelines — and the team to run them.
Strategic Growth
$140k+ in documented annual savings across client engagements
Real-Time at Scale
500M+ daily events processed with sub-second latency
Team & Platform
Scaled data teams from 2 to 15 engineers in 12 months
Future-Proof
Production systems across adtech, e-commerce, fintech, IoT, non-profit
Limited slots available this month — book now
Trusted by DoorDash, Capgemini Engineering, and VC-backed startups across 5 industries
Serving US & UK clients remotely · Based in Warsaw, Poland
Transforming Complex Data
Into Strategic Advantages
I architect high-performance data ecosystems that turn raw information into your most valuable asset. My mission is to empower your business with speed, clarity, and scalability.
From chaos to clarity: I build the data engines that power industry leaders. Whether processing millions of daily events or optimizing cloud infrastructure, I ensure your data isn't just stored—it's working for you.
With proven success across adtech, e-commerce, fintech, IoT, and non-profit sectors, I bridge the gap between complex engineering and strategic growth, delivering solutions that scale with your ambition.
Learn More About Me
Modern Tools & Technologies
Data Engineering
Data Visualization
Cloud & Infrastructure
Databases
Development & Monitoring
AI & Automation
Comprehensive Data Engineering
Solutions
Data Pipeline Development
End-to-end data platform builds: architecture, real-time pipelines, and team scaling for high-growth companies
Cloud Data Architecture
Build scalable cloud-native data solutions on AWS — S3, Redshift, Glue, Lambda, Kinesis, and EMR
Data Warehouse Design
Create optimized data warehouse architectures for enhanced performance
Data Migration
Implement reliable data migration strategies ensuring seamless transitions and integrity
Analytics Infrastructure
Set up end-to-end analytics platforms for real-time business intelligence
Data Version Control
Implement version control systems for data and model management
Projects That Delivered Results
Real transformations with measurable business impact
AI-Powered IoT Operations Platform
Built the data function from scratch for a 150+ client IoT platform — from legacy migration to unified analytics on AWS
Impact Metrics
Clients Served
150+
Data Platform
Unified
Faster Time-to-Market
40%
Legacy systems with no unified analytics — clients flying blind on operations
Unified AWS platform serving 150+ clients with real-time dashboards and predictive analytics
Executive Revenue Real-time Analytics Platform
Built comprehensive dashboard suite for tracking operations, customer behavior and financial metrics
Impact Metrics
KPI Monitoring
Real-time
Business View
360°
Data Latency
<5 min
Week-old reports making it impossible to react to market changes quickly
Real-time dashboards with live KPIs enabling instant strategic decisions
Food Delivery Analytics Platform Optimizations
Batch processing system handling millions of daily events for premier food delivery service
Impact Metrics
Events/Day
100M+
Annual Savings
$140K
Uptime
99.99%
High Snowflake compute costs and delayed campaign insights
Migrated to Data Lake with $140K annual savings and zero data loss
Growth Accounting Optimization Pipeline
Comprehensive Engineering Initiative to Enhance User Acquisition and Retention Strategies
Impact Metrics
Engagement Lift
18%
Attribution
Multi-touch
Data Loss
Zero
Unable to track user journeys across multiple touchpoints effectively
Full-funnel attribution providing clear ROI on every marketing channel
Consumer Behavior Analytics
Analytics-driven system for tracking and optimizing user journey
Impact Metrics
User Engagement
+18%
Funnel Tracking
Real-time
Journey Mapping
Full-funnel
Product teams missing critical drop-off points in user journeys
18% engagement lift through consumer funnel tracking and journey mapping
AI-Driven Development Process Optimization
Leveraging AI technologies to enhance software development processes
Impact Metrics
Code Reviews
Automated
Review Cycle
Days→Hours
AI Workflows
Integrated
Manual code reviews and testing taking days to complete
AI-assisted automation reducing review and development cycles
Marketing Campaign Analytics
Optimizing ETL processes for marketing campaign analysis
Impact Metrics
Annual Savings
$140K
Compute Costs
-30%
Insights
12h earlier
Delayed insights and high infrastructure costs limiting campaign effectiveness
$140K saved annually with 12-hour faster insights for agile marketing
Fintech Data Migration
Mortgage data system modernization for financial services
Impact Metrics
Data Accuracy
100%
Reporting Reliability
99.99%
Data Loss
Zero
Legacy systems with manual processes risking data integrity and compliance
Modern platform with 100% accuracy and zero data loss during migration
Investment Portfolio Analytics System
Statistical analysis system for investment portfolio monitoring
Impact Metrics
Analysis Window
30min
Detection Threshold
1%
Accuracy
99%
Manual portfolio monitoring with delayed risk detection and reporting
Automated 30-minute window analysis with 99% accuracy and instant alerts
Donor Intelligence & CRM Migration Platform
End-to-end AWS data platform with medallion architecture for a top-5 UK non-profit — Salesforce migration, MDM, and reverse ETL
Impact Metrics
Data Loss
Zero
Team Managed
6-person
Donor Streaming
Real-time
Fragmented donor data across legacy CRM with no unified view or personalization capability
Golden records via MDM, real-time donor intelligence, and personalized outreach across all channels
Key Achievements
0+
Projects Completed
Successfully delivered with highest satisfaction
0+
Companies Served
Industry leaders across sectors
$0k+
Annual Cost Savings
Infrastructure optimization across engagements
0.00%
System Reliability
Uptime achieved across projects
0M+
Daily Events Processed
Peak throughput across production pipelines
What Clients Say About Me
Trusted by industry leaders across fintech, e-commerce, and data-driven sectors
"Jakub is a rare example of a person with immense passion for technology, coding, and growth. Working with Jakub is a pleasure; the best challenge is finding opportunities to satiate his hunger for greater responsibilities so he can deliver continuous excellence. Once he gets a task matching his abilities, not only does his competence in individual work shine, he also mentors and leads others. He is a good planner, communicates proactively and in a friendly manner, and keeps a level head when facing difficulties. It was an honor to lead Jakub as a Senior Data Engineer and witness the achievements possible when such a dedicated, high‑performing individual meets a challenge worthy of his skills."
Peter
Lead Data Engineer, Capgemini Engineering
"He's an exceptional data engineer who consistently found elegant solutions to complex problems. For example, he built custom analytics tools in Google Sheets that enabled our team to efficiently analyze large‑scale datasets from our data warehouse—turning what could have been a heavy lift into something accessible and actionable. Jakub combines strong technical skills with a pragmatic, team‑first approach."
Brent
System & Tools Manager, CTV/OTT-focused Ad-buying Platform
"Jakub is a highly talented Data Engineer who delivers high‑quality, sustainable data solutions with tangible impact. He is passionate about technology, grows quickly, and shares knowledge across teams and the wider community. He consistently earns strong feedback from peers and managers. In the Property Finance domain, his contributions brought durable improvements to our data solutions."
Jacek
Engineering Manager of Data Solutions, Nykredit Bank
"Jakub has been outstanding to work with. He consistently delivers reliable, high‑quality data engineering solutions, communicates clearly, and anticipates risks before they become issues. His contributions accelerated our AI initiatives in the automotive space and were delivered on time with exceptional attention to detail. I gladly give him my highest recommendation."
Justin
CEO, Automotive company providing AI Solutions
"Cut our compute bill by 30% and saved $140K annually while improving performance. Best investment we've made in our data infrastructure."
Lisa
Head of Analytics, Online Food Delivery Platform leading in US
"I had the pleasure of managing Jakub during his time on the DD Data Engineering team, and he consistently impressed me with his technical rigor. Jakub was instrumental in delivering several high‑stakes data projects, ensuring that our pipelines were not only scalable but very resilient with good documentation skills. Any team would be lucky to have Jakub's expertise in their data stack."
Gowri
Engineering Manager (Data), DoorDash
"I had the pleasure of working closely with Jakub on a highly challenging and fast‑paced data engineering project. He quickly ramped up, collaborated effectively, and began contributing meaningful solutions early on. He brings a clear perspective to problems and consistently proposes innovative, practical approaches. His meticulous approach to documentation and disciplined tracking of work and timelines truly stood out. A proactive and dependable collaborator, he elevated the entire team's performance."
Madhura
Software Engineer (Data), VC-backed CTV Advertising Platform
READY TO TRANSFORM
YOUR DATA?
Let's discuss how we can turn your data challenges into competitive advantages