Summary
Overview
Work history
Education
Skills
Certification
Timeline
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Joe Dwonczyk

London,UK

Summary

Tenacious Founder experienced in building successful startups from idea creation to delivery. Forward-thinking with excellent market knowledge to remain ahead of competitor activity. Achieves constructive relationships with stakeholders and customers to negotiate optimal business outcomes. Highly motivated by financial reward for the purpose of personal investment in innovative ventures and industries having a positive impact on society, health and or climate.

Overview

8
8
years of professional experience
1
1
Certification

Work history

Founder

Joey's Jars
London, UK
01.2024 - Current
  • Flask, Pandas, Tensorflow, Keras, OpenCV, HuggingFace, YahooFinance, QuantLib...
  • Financial Models : CDS Pricing, Monte Carlo Simulations, PDE Solving, Vanilla Equity Options, Rate Swaps, OTC Eq
  • Options
  • IR Bonds, Inf-li Bonds, FX Swaps, Equity Basket Options
  • Cloud & DevOps : AWS (EC2, S3, SES), Docker, GCP, Heroku
  • Databases : Neo4j, SQL, MongoDB, PostgreSQL
  • Blockchain : Fuse Blockchains, Solidity Smart Contracts, Launched and scaled health-focused food tech business, overseeing operations, sales, and app development for corporate wellness
  • Developed Shopify platform with custom features and began building fitness tracking app with smart fridge integration.

Senior Associate

River and Mercantile Derivatives, Schroders Bank
London, UK
01.2021 - Current
  • Executed OTC equity derivatives trades, live pricing against counterparties, and best price execution using platforms such as Tradeweb, Longview, Markitwire, and OTCX
  • Designed and structured equity strategies for pension schemes, balancing client risk preferences with market conditions, including hedging strategies and FX exposure management
  • Conducted risk management analysis, ensuring collateral sufficiency, MTM calculations, and autonomous client position checks using Risk01s and valuation time series
  • Managed portfolio structuring, strategy monitoring, and automation of client reporting, enhancing client diversification and reducing business risk
  • Supported prospective client pitches by preparing decks and presenting structured strategies based on market insights and client needs.

CTO, Founder

Liverpool, UK
04.2021 - 12.2023
  • Architected and developed comprehensive eco-conscious debit card platform, integrating blockchain, AWS infrastructure, and advanced algorithms for real-time cashback based on product eco-ratings
  • Dockerized complex Conda containers for machine learning algorithms and managed entire AWS cloud infrastructure, including S3, SES, and EC2
  • Led backend development with Node.js and integrated Google authentication and Neo4j graph database functionalities.

Senior Associate, Quantitative Engineering Desk

River and Mercantile Derivatives, Schroders Bank
London, UK
01.2017 - 01.2020
  • Developed and maintained financial curve builders used for discounting and projecting values in valuation of financial products, including bonds and swaps.
  • Built and maintained bond valuation models, adding new functionality to VBA Excel add-in for communicating with internal systems via HTTP
  • Enhanced swap leg pricing by simplifying logic and updating statistical analysis processors for interest and inflation swaps, using correlation analysis of time-series data
  • Implemented SignalR streaming service Web API to process real-time ticks from Bloomberg, rebuild financial curves, and stream updates to clients
  • Utilised Python for time-series analytics, clustering, PCA, and client/counterparty actions, using tools like
  • Scikit-learn, Numpy, and Pandas.

Education

Certificate in Applied Data Science -

Cambridge Spark
London
2020

Certificate in Quantitative Finance (CQF) -

Fitch Learning
2019

Master of Science -

University of Warwick
2015

Basket CDS Pricer - Quant Finance

River & Mercantile

Skills

  • QUANTITATIVE DEVELOPER
  • Quantitative developer with expertise in designing and implementing sophisticated financial models for derivatives pricing
  • Focusing on credit and structured equity products Experienced in Python, C#, Flutter, Node and Web for quantitative analysis
  • And financial engineering Proven track record of working with trading desks to develop robust risk management solutions
  • Pricing tools (VBA Excel Python C#), and optimization strategies for financial instruments
  • TECHNICAL SKILLS
  • Languages :
  • Python, Typescript Javascript, HTML, CSS, SASS, Dart, C#, C, R, VBA, Solidity
  • Frameworks : Nodejs, Flutter, React, Redux, Expressjs, Firebase, Web3Auth

Certification

  • Basic Solidity Smart Contracts Training
  • Certificate in Quantitative Finance
  • Certificate in Applied Data Science Perspective

Timeline

Founder

Joey's Jars
01.2024 - Current

CTO, Founder

04.2021 - 12.2023

Senior Associate

River and Mercantile Derivatives, Schroders Bank
01.2021 - Current

Senior Associate, Quantitative Engineering Desk

River and Mercantile Derivatives, Schroders Bank
01.2017 - 01.2020

Certificate in Applied Data Science -

Cambridge Spark

Certificate in Quantitative Finance (CQF) -

Fitch Learning

Master of Science -

University of Warwick

Basket CDS Pricer - Quant Finance

River & Mercantile

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Joe Dwonczyk