Maciej Poniewierski

Hello, I'm

Maciej Poniewierski

Financial Modelling Analyst · Data Analytics

Experienced financial modeller and data analyst in financial services, with hands-on experience building Excel, Python and C# models for budgeting, forecasting and regulatory change. Skilled in SQL, Azure and Power BI, translating complex data into clear insights for stakeholders.

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3+ Years Experience
6 Companies
6+ Certifications
What I Do

Technical Skills

Analytics & Modelling
Excel / Financial Modelling
SQL
Python
R
Cloud & Data
Power BI (DAX)
Azure (AZ-900, DP-900)
AWS (in progress)
SAS (Base Certified)
Development
AI Automation (Claude)
C# / .NET
Git / GitHub
Unit & Integration Testing
Delivery & Methods
Agile / Scrum Master
Jira / Confluence
Stakeholder Communication
Regulatory Compliance (UK/AU)
Credentials

Certifications & Achievements

Azure Fundamentals AZ-900 View
View
Microsoft
Azure Fundamentals AZ-900
2024
SAFe Agilist Certificate View
View
Scaled Agile
SAFe Agilist Certificate
2024
SAS Certified Specialist: Base Programming View
View
SAS Institute
Certified Specialist: Base Programming (SAS 9.4)
2023
Azure Data Fundamentals DP-900 View
View
Microsoft
Azure Data Fundamentals DP-900
2025

Bilingual: English & Polish

Scrum Master

Driving Licence

CII Level 3 Certified

Learning Path

Education

Sep 2025 – Sep 2028
MSc Financial Technology with Data Science
View Modules

University of Bristol — Part-Time, Current

Postgraduate study combining financial technology, data science and quantitative methods, building on professional experience in financial services and data analytics.

FinTechData Science Quantitative Methods
Mar 2025 – Aug 2025
Level 3 Certificate in Financial Services
View Modules

Chartered Insurance Institute (CII)

Professional qualification in financial services, working towards a Level 4 Diploma in Financial Planning.

Financial ServicesFinancial Planning
Sep 2018 – May 2021
BSc Information Technology Management for Business
View Modules

Oxford Brookes University — Upper Second-Class Honours (2:1) 68%

Studied IT management, business systems, data management and Spanish alongside core computing modules. Developed a strong foundation in applying technology to business problems.

IT ManagementBusiness Systems Spanish
Sep 2016 – May 2018
Level 3 Extended Diploma in Computing
View Modules

City of Bath College — Triple Distinction (D* / D* / D*)

Achieved the highest possible grade across all units, covering programming, networking, databases and systems analysis.

ComputingProgramming Databases
Career

Work Experience

Jul 2023 – Present
Financial Modelling Analyst

Intelliflo — Bath, UK (Full-time)

  • Designed and deployed Claude AI automation for team workflows, reducing manual development effort by 60%.
  • Implemented Git version control and standardised workflows across the team, cutting file retrieval time by 40% and improving code traceability.
  • Designed and implemented a structured code audit and reconciliation framework, reducing reconciliation cycles by 50%.
  • Collaborated with business architects, clients and developers to deliver client-driven system changes on a SaaS financial planning platform.
  • Wrote Excel and C# code to develop financial models and test engine functionality; ensured UK and Australian regulatory compliance.
  • Investigated and resolved production issues, maintaining system availability and data integrity.
ExcelC# Claude AIGit AgileConfluence
Jun 2022 – Jul 2023
Graduate Data Consultant

Katalyze Data — Witney, UK (Full-time)

  • Designed and optimised Power BI dashboards with advanced filtering, DAX measures and real-time data connections for financial sector clients.
  • Applied full data lifecycle processes including code documentation, test frameworks and quality assurance.
  • Worked with financial sector clients on cloud migration projects, designing data infrastructure solutions.
  • Participated in Agile ceremonies — standups, sprint planning and retrospectives — using Jira and Confluence.
Power BIDAX AzureSQL JiraAgile
Nov 2021 – May 2022
Chalet Host (Chef)

Courchevel La Tania — France (Full-time)

  • Prepared and served daily meals for groups of 16+ guests to a high culinary standard.
  • Delivered exceptional guest experiences while working both independently and within a small team.
  • Created tailored menus and dishes for guests with diverse dietary requirements.
  • Organised, supervised, and trained a team of chefs to maintain consistent service quality.
  • Demonstrated strong professional conduct and refined table etiquette during all services.
  • Coordinated and executed special-occasion events, including birthdays and private celebrations.
  • Managed weekly stock control and inventory tracking using Microsoft Excel.
  • Informed and guided guests on ski-resort rules, safety practices, and local attractions.
  • Oversaw weekly chalet changeovers, ensuring high standards of cleanliness and maintenance.
HospitalityLeadership InternationalFrench Alps
Sep 2017 – Sep 2021
Customer Assistant

Tesco — Trowbridge & Oxford, UK (Part-time)

  • Collaborated within a large team to resolve customer issues in a fast-paced retail environment.
  • Operated supermarket software systems to update stock levels and report operational issues.
  • Trained new team members in customer service, stock management, and store procedures.
  • Organised and maintained stock levels to ensure product availability and store efficiency.
Customer ServiceTeamwork
Jun 2017 – Jul 2017
IT & E-Commerce Intern

Ivana Rosova Fashion Group — Prague, Czechia (Internship)

  • Worked directly with the CEO on the development and optimisation of the company's e-commerce platform.
  • Maintained and enhanced the Shopify website by implementing new features and functionality.
  • Supported marketing initiatives focused on business growth, brand visibility, and expansion.
  • Performed administrative tasks, including managing and updating the customer database.
  • Analysed competitor strategies to identify opportunities for improved performance and efficiency.
  • Assisted in organising and preparing fashion shows and brand events.
  • Provided customer support through the company helpline.
ShopifyE-Commerce MarketingInternational
Feb 2017 – Mar 2017
Help Desk Support

City of Bath College — Bath, UK (Internship)

  • Provided hardware and software support, including troubleshooting Microsoft Office applications.
  • Assisted with account access, password resets, and file recovery for students and staff.
  • Organised and maintained library materials to support efficient resource access.
  • Managed equipment logs and oversaw the rental process for college devices.
IT SupportHelp Desk
Jan 2017 – Jun 2017
Barista

Boswell's Group — Trowbridge, UK (Part-time)

  • Served high volumes of customers while consistently delivering excellent service and satisfaction.
  • Prepared and served a range of food and beverages to quality standards.
  • Set up and closed the café each day, ensuring a clean, organised, and welcoming environment.
Customer ServiceHospitality
Projects

Portfolio

Power BI Walkthrough video thumbnail
Data
Power BI Walkthrough

Personal Power BI project analysing NYPD arrest and collision data. Integrated demographic, geographic and time-series datasets to surface actionable insights through interactive dashboards with advanced filtering and DAX-driven measures.

Power BIDAXSQLData Analysis
GitHub
FinModel SaaS Platform
Live Site
Dev · FinTech
FinModel SaaS Platform

Full-stack financial modelling SaaS platform enabling professionals to build DCF and comparables valuations, upload historical data, collaborate in real-time, and export professional reports — built with React, Node.js and PostgreSQL.

ReactNode.jsPostgreSQLAuth0Stripe
finmodel.co.uk
Mortgage Repayment Calculator
GitHub
FinTech
Mortgage Repayment Calculator

Python tool modelling first-house mortgage scenarios, computing monthly repayments, total interest payable and full amortisation schedules across varying property values, deposits and interest rates.

PythonFinanceModelling
Blockchain Supply Chain Dissertation video thumbnail
Dev
Blockchain Supply Chain Dissertation

Final-year dissertation and web application exploring blockchain technology for supply chain transparency and traceability. Built in Python, investigating decentralised ledger solutions as an alternative to traditional supply chain management systems.

PythonBlockchainSupply ChainDissertation
GitHub
FinNerd Blog
Visit Blog
FinTech · Data
FinNerd Blog

Financial modelling and data analytics blog aimed at students and early-career professionals. Covers DCF valuation, Excel modelling, Python for finance, and career guidance — built with Astro for fast, static delivery.

AstroFinanceBloggingEducation
finnerd.co.uk
Outside Work

Hobbies & Interests

AI & Automation

Boxing

Data & Finance

Investing

Running

Snowboarding

Tennis

Travel

Trekking

Say Hello

Get In Touch

Open to new opportunities, collaborations, or just a chat about data, finance and technology.

Location

United Kingdom

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