Hey, I'm
Arslan Kaleem.
I build things that make your data useful.
About Me
I started out as a developer who got frustrated waiting for analytics reports. So I learned to build them myself. That mix of "how do we build this?" and "what does the data actually say?" stuck with me through a CS degree, an MSc in Business Analytics, and four years of shipping products that people actually use.
These days I split my time between building dashboards that help teams make faster decisions and writing code that doesn't break at 3am. At NSL, I built geospatial analytics that bumped enforcement efficiency by 20%. At M&S, I wrangled inventory data across 500+ SKUs. And somewhere in between, I shipped a fintech app that freelancers actually like using.
When I'm not staring at code, I'm probably solving LeetCode problems for fun (yes, really), exploring London's coffee scene, or falling down rabbit holes on Stack Overflow.
Tools I reach for daily:
- Power BI (PL-300 Certified)
- SQL & PostgreSQL
- Python (Pandas, scikit-learn)
- Tableau & R
- React.js & Next.js
- Node.js & Express
- AWS (CLF-C02 Certified)
- Docker & CI/CD
- Flutter & Dart
- REST APIs & GraphQL
Where I've Worked
Volunteer Flutter & Node Developer @ Cherry CIC
December 2025 Present
- Building a marketplace where selling your old clothes means donating to charity. 100% of proceeds go to registered nonprofits
- Writing the mobile apps (Flutter for iOS and Android) and backend services (Node.js) that make it all work
- Coordinating with 20+ volunteers across time zones via GitHub. Open source, real impact, zero ego
- Proving that side projects can do more than pad a resume they can actually help people
Some Things I've Built
Featured Project
Vibecheck
Vibecheck is your go-to platform for discovering the atmosphere of a place before you visit. Using real-time insights, user reviews, and AI-powered analysis, Vibecheck helps users make informed decisions about restaurants, clubs, and events. Whether you are looking for a chill hangout spot or a high-energy venue, Vibecheck ensures you know what to expect.
- React
- Node.js
- AI/ML
- Google Maps API
- MongoDB
Featured Project
AI & Developer Productivity Research
My MSc project asked a simple question: does AI actually make developers faster, or are we just hyped? Built ML models to find out. Turns out, the answer is “it depends” and I identified exactly which workflows benefit most. The research uses real engineering data to cut through the noise and show where AI tools deliver real value.
- Python
- scikit-learn
- Pandas
- Machine Learning
- Predictive Analytics
- Data Visualisation
Featured Project
Total Health & Dental Care
Total Health & Dental Care (THDC) is a cutting-edge dental network that integrates advanced technology with top-tier dental specialists to offer seamless, high-quality dental care. With a focus on preventative care, digital dentistry, and patient convenience, THDC is revolutionizing the dental industry by making superior oral health services accessible and efficient.
- Next.js
- TypeScript
- Tailwind CSS
- Sanity CMS
Featured Project
Honeydu
Honeydu is a smart invoicing platform designed for freelancers and creative professionals. It simplifies payments, automates invoice tracking, and integrates seamlessly with banking and accounting tools. With a focus on financial transparency and ease of use, Honeydu empowers independent workers to manage their earnings effortlessly and get paid faster.
- React
- Node.js
- Stripe
- PostgreSQL
- AWS
Featured Project
Cherry CIC Marketplace
An open-source marketplace where second-hand clothes fund real charities 100% of proceeds donated. I built the mobile apps (iOS + Android) and backend for a global team of 20+ volunteers. It’s proof that tech can do more than make money. Sometimes it can give it away to people who need it.
- Flutter
- Node.js/Express
- PostgreSQL
- REST APIs
- Open Source
Other Noteworthy Projects
view the archiveCivil Enforcement Performance Insights
Power BI reporting suite monitoring daily KPIs for 20+ Civil Enforcement Officers. Combines patrol
data, contravention hotspots, and safety flags to optimise routes, surface coaching needs, and cut
invalid PCN rates by 15%.Retail Sales & Waste Dashboard
Power BI dashboard that visualised daily sales across 500+ SKUs, comparing actuals vs forecasts to
flag slow-moving stock. Provided replenishment and waste insights that cut restock time by 20% and
improved stock turnover on high-traffic days.AI Impact on Developer Productivity
Built supervised learning and anomaly detection models to quantify how AI tooling influences
developer productivity. Engineered feature extraction across software practices to forecast where
automation delivers the biggest gains.Customer Engagement & Revenue Analysis
Applied the CRISP-DM framework to analyse customer conversion sessions, built machine learning
models in R to uncover revenue drivers, and delivered Tableau visualisations that guided marketing
optimisation strategies.HR Analytics Dashboard
Analysed employee productivity patterns, turnover factors, and the gender pay gap using R, then
built interactive Tableau dashboards to give HR leaders actionable insights for staffing and
retention.Insurance Customer Profiling
Built customer profiles and policy targeting strategies using IBM SPSS Modeler. Calculated ROI
metrics and produced Tableau/Power BI visualisations that helped optimise marketing focus and
targeting.
Data Projects
View AllCivil Enforcement Performance Insights
powerbiPower BI dashboard for NSL (Marston Holdings) analysing civil enforcement officer performance across UK regions. Includes geospatial mapping, KPI tracking, and data-driven resource allocation recommendations.
Retail Sales & Waste Dashboard
powerbiPower BI analytics for M&S tracking forecast vs actuals, inventory optimisation, and waste reduction. Translates complex supply chain data into actionable insights for store managers.
AI Impact on Developer Productivity
python-scriptMSc dissertation using scikit-learn and predictive analytics to measure whether AI coding assistants actually improve developer productivity. Spoiler: it depends on the workflow.
What's Next?
Let's Build Something
Got a dashboard that's collecting dust? An app idea that needs someone who actually ships? A data problem that's been on the backburner for too long? My inbox is open. I read every message and reply fast.
Drop Me a Line