Summary
Overview
Work history
Education
TENNIS
PROJECT
Timeline
Generic

DENNIS MARJANOV

London

Summary

Computer Science graduate (First-Class Honours, 2025) with experience in full-stack development, Agile workflows, and human-computer interaction as well as extensive travel, leadership and dependence developed through International tennis competition.

Overview

4
4
years of professional experience
3
3
years of post-secondary education

Work history

Software Engineer

Foxtons
London
12.2025 - Current
  • Delivered bug fixes within structured sprint cycles, ensuring issues were resolved, tested, and released on schedule.
  • Modified and optimised SQL stored procedures that were returning incorrect results, including resolving duplicate row issues and faulty aggregations.
  • Reverse-engineered application behaviour by analysing existing code and data flows to resolve business-driven issues raised by stakeholders.

Support Software Engineer (.NET, C#, SQL, Jira)

Foxtons
London
01.2025 - 12.2025
  • Identified and explored bugs in Foxtons' bespoke BOS CRM (17B+ records) using advanced SQL queries and codebase analysis.
  • Collaborated with engineers to analyse stack errors, identify root causes, and propose long-term system fixes.
  • Developed a strong ability to read and understand complex, large-scale proprietary code, gaining deep insight into a unique CRM architecture.
  • Reduced Jira ticket backlog from 38 to 10, a 74% improvement within three weeks, demonstrating rapid adaptability and problem-solving.

Professional Tennis Coach and Hitter

International Tennis Federation
01.2022 - 12.2025
  • Coached individuals and groups of 16, diverse ages and abilities, demonstrating strong leadership, communication, and adaptability.
  • Developed transferable skills in strategic thinking, communication, and leadership, relevant to tech roles involving problem-solving and team collaboration.

Full Stack Developer (React, Java, JavaScript, SQL, Trello, Git)

Spendy
London
01.2025 - 06.2025
  • Designed and implemented an algorithm to generate a dynamic spending score, analysing past habits, current subscriptions, and predicted future financial behaviour.
  • Worked as a Full Stack Developer, applying Agile methodology to plan, develop, test, and iterate throughout the software lifecycle.
  • Collaborated via Git for version control, code reviews, and integration.

Education

Bachelor of Science - Computer Science Software Engineering

Royal Holloway University of London
London
09.2022 - 09.2025

TENNIS

  • Competed internationally, reaching qualification stages of professional tournaments and developing resilience under elite pressure.
  • Took Wimbledon Doubles Champion Julian Cash to a set tiebreak in the NPL, showing focus and performance at a world-class level.
  • Held a Tecnifibre sponsorship for 6 years, proving consistency, professionalism, and long-term dedication.
  • Balanced 20+ hours of weekly training with a First-Class Computer Science degree, demonstrating discipline and time management.

PROJECT

Reseller Tracker (React, JavaScript, SQL, Supabase, Git),

  • Built a multi-user SaaS platform using the MVC architecture, where each user manages their own inventory through a secure, token-based authentication system.
  • Designed and implemented algorithms to track inventory, fees, ROI, and turnover time, with automated calculations for profitability and decision-making.

3D Travel Planner (Svelte, TypeScript, HTML, CSS, JSON),

  • Presented analytical data through intuitive methods for users.
  • Applied progressive disclosure to reduce cognitive load, improving retention by 20-30%.
  • Integrated an AI itinerary planner, generating step-by-step routes via APIs.

Timeline

Software Engineer

Foxtons
12.2025 - Current

Full Stack Developer (React, Java, JavaScript, SQL, Trello, Git)

Spendy
01.2025 - 06.2025

Support Software Engineer (.NET, C#, SQL, Jira)

Foxtons
01.2025 - 12.2025

Bachelor of Science - Computer Science Software Engineering

Royal Holloway University of London
09.2022 - 09.2025

Professional Tennis Coach and Hitter

International Tennis Federation
01.2022 - 12.2025
DENNIS MARJANOV