Josh Hirschkorn
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Index

6 roles

Experience

Internships and placements across quantitative development, ML systems, cloud infrastructure and full-stack engineering.

Jul 2026 · Present
Cantor Fitzgerald & BGC Group logo

Cantor Fitzgerald & BGC Group

Quantitative Developer Intern / London

  • Designed and deployed a scalable Apache Airflow DAG orchestrating a monitoring pipeline for Nomad jobs, automatically analysing Solace queue health and generating outage reports, cutting mean time to detection by 95%.
Apr 2026
BlackRock logo

BlackRock

Aladdin Engineering Spring Intern / London

  • Selected as 1 of 12 participants from over 11,500 applicants and ranked 1st in the Python technical coding challenge.
  • Built an adopted Windsurf plugin that learns internal coding patterns, lifting suggestion accuracy ~25% and cutting review time ~30%.
Apr 2026
Morgan Stanley logo

Morgan Stanley

Technology Spring Intern / London

  • Ranked 1st of 15 in an algorithmic trading challenge, developing low-latency Python strategies under market constraints.
  • Applied combinatorics and expected value analysis in a team probability simulation, modelling decisions under uncertainty.
Aug 2025 · Oct 2025
Magic AI logo

Magic AI

Computer Vision and ML Systems Intern / London

  • Proposed and built an automated evaluation pipeline to benchmark internal pose estimation models, enabling systematic comparison and optimisation using YOLO pose and TCPFormer to assess temporal correlation and depth accuracy.
  • Improved model performance by 15% on 60% of systems by introducing consistent evaluation metrics and feedback loops.
  • Designed a multithreaded 12-camera system (30fps, low latency) for real-time pose estimation and data labelling.
Apr 2025
Amazon AWS logo

Amazon AWS

Technology Spring Intern / London

  • Ranked 2nd of 20 in an application development challenge building predictive models for decision optimisation.
  • Deployed a Flask app on EC2, configuring security groups, REST APIs and CloudWatch monitoring for a live AWS service.
Feb 2024 · Mar 2024
Yorlet logo

Yorlet

Software Engineer Intern / London

  • Developed a tenant onboarding system in TypeScript that improved conversion by 26% via A/B testing.
  • Built a distributed notification system (Node.js, MongoDB, Flask) for 11K+ users and improved rent payments by 24.4%.