Matias Lopez

Senior Software Engineer at Bloomberg in London

Building reliable, scalable infrastructure that connects enterprise platforms to the same systems powering the Bloomberg Terminal.

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Education

Duke University — Durham, NC

Bachelor of Science

Electrical and Computer Engineering, Biomedical Engineering

GPA: 3.60

May 2017

Experience

Bloomberg LP

Senior Software Engineer — London

Apr 2024 –

Present

  • Leading implementation of DNS-based service routing across 1,500+ microservices, replacing an error-prone system that caused request storms, service outages, and cross-client data leakage.
  • Decoupling UI access control into a standalone microservice, enabling the UI infrastructure team to migrate the platform to a more flexible deployment.
  • Retiring legacy login and session permissioning risk, unblocking three platform teams and enabling the org-wide DNS routing migration.
  • Leading development of an internal SRE platform serving as the central operations hub for machine management, client health triage, trading system observability, middleware, and managed database teams.
  • Documenting AI adoption outcomes, effective uses and failure modes, to advise department leadership on engineering AI strategy.

Senior Software Engineer — London

Apr 2023 –

Apr 2024

  • Served as de facto staff engineer for Bloomberg's buy-side portfolio management UI, establishing architecture patterns and documentation standards for a 40-engineer group.
  • Reduced application startup time from 2 minutes to 20 seconds by refactoring critical middleware, and resolved two long-standing component defects that had persisted for up to four years.
  • Led a five-person cross-functional group to upskill in C++, enabling a primarily JS/TS team to contribute to a sister-org's multi-year migration — reaching development speed comparable to a first-party C++ team and beginning the second quarter's scope ahead of schedule.

Senior Software Engineer — New York City

Jun 2021 –

Apr 2023

  • Led development of the output-report interface to Bloomberg AIM's compliance rule engine, completing one of two offline reporting migrations and laying the foundations for live trading migration.
  • Built an A/B testing platform with a web-based UI to validate zero client impact as traffic migrated from a legacy single-threaded reporter.
  • Automated the relink procedure using Bloomberg's distributed build infrastructure, transforming rollouts from twice-monthly cancellation-prone releases to four concurrent two-week cycles with no ABI incompatibility risk.

Software Engineer — New York City

Jan 2020 –

Jun 2021

  • Grew to lead UI engineer on Bloomberg's buy-side post-trade offerings, migrating the frontend from untyped JavaScript to a strictly typed TypeScript system.
  • Restructured the buy-side post-trade UI to be robust enough to survive complete team churn within a year — the new team went three years without an engineer-caused outage.

Software Engineer — Princeton, NJ

Jun 2017 –

Jan 2020

  • Built Bloomberg's Legal Entity Identifier (LEI) website and a document annotation web application.
  • Created a schema-driven form generator in React and TypeScript, reducing manual form development.
  • Improved backend scalability by introducing Redis, decentralizing services for higher fault tolerance.
  • Owned a validation service processing hundreds of checks per submission, powering LEI reference data.

Duke University

Research Assistant, Grill Lab — Durham, NC

Sep 2014 –

May 2017

  • Wrote a user interface to run trials and control hardware in a deep brain stimulation clinical study
  • Developed a circuit into PCB, modeling the housing, sourcing parts, assembling, and testing a control hub
  • Presented work at the Duke NIH-IMSD Symposium 2015, 2016 and ABRCMS 2016

Teaching Assistant — Durham, NC

Aug 2014 –

May 2016

  • Taught over a hundred students in two courses on MATLAB and mechatronics over four semesters
  • Prepared and presented three short lectures linking course material to relevant uses

Research Assistant, Henriquez Lab — Durham, NC

Jan 2014 –

Aug 2014

  • Analyzed large XML datasets with spatial information of players and ball of live basketball games
  • Created a user interface to display and further analyze the datasets

Projects

Enterprise Platforms Technology Portal (Otter)

Apr 2024 –

Present

  • Revived a dormant internal tool into the primary operations interface for the Enterprise Platforms org, growing it from a side project into a platform relied on daily for machine management, client health triage, and management-level resource visibility.
  • Provides routing config linting, client install health tracking by machine, and aggregated resource usage across microservices — with privileged dashboards for department management.
  • Expanded scope to serve as the interface for trading system end-of-day observability, middleware-as-a-service, and managed databases — acting as a unified entry point for capabilities owned by multiple teams.
Bloomberg's CMake Packager — Inner Source

Jun 2021 –

Present

  • Maintaining Bloomberg's internal CMake build, tracking upstream release cycles and migrating to each new version across 25-30k build artifacts.
  • Each migration covers the entirety of Bloomberg's C++ footprint — approximately 50% of the codebase in a C++/JS engineering organisation.
  • Reports bugs upstream at least once per minor release, creating minimal reproductions and coordinating directly with CMake maintainers.
Web Frontend Guild — Inner Source

Jul 2019 –

Present

  • Maintained inner-sourced middleware clients, Redis libraries, and shared utility packages.
  • Championed TypeScript adoption, improving type safety and developer experience company-wide.
  • Supported web teams with infrastructure, deployment, and build-tooling challenges.
React AVRO Form

Dec 2017 –

Dec 2019

  • Built a dynamic form generator driven by AVRO schemas with cascading reference data lookups.
  • Optimized request chains using graph union joins, minimizing redundant network calls.
  • Decoupled state management from UI rendering, enabling easy framework portability.
Data Importer — gleif.org

Oct 2017 –

Jan 2020

  • Built a data pipeline ingesting 1.4 million records daily to power site-wide search.
  • Rewrote the pipeline two years later, achieving a 3x reduction in runtime.
  • Leveraged async Python for network throughput and multiprocessing for XML stream parsing.
Annotation Remote Host

Jul 2019 –

Jan 2020

  • Extracted remote control APIs into a standalone servlet for clearer separation of concerns.
  • Introduced an isolation layer between incoming commands and the WebSocket interface.
  • Adopted Redis to enable horizontal scaling and improve system reliability.
IORedis — Open Source

May 2019 –

Jun 2019

  • Contributed custom connector classes enabling async node resolution in cloud Redis deployments.
  • Improved project tooling, increasing code quality standards and TypeScript coverage.
Web Portfolio and Resume Parser — Personal
  • Implemented my own parser, which populates the website and creates this resume
Stimulating and Recording Relay Boxes — Grill Lab

Sep 2015 –

May 2017

  • Combined digital channels into a single analog one, then built a circuit to control several TTL devices by separating the channels again
  • Upgraded the components and allowed for expandability
Stimulation Interface — Grill Lab

Jan 2015 –

May 2017

  • Written in Object-Oriented MATLAB to automate experiment runtime
  • Allows for control of external hardware, including benchtop equipment
Portable EMG Sensor — Senior Capstone Design

Aug 2016 –

Dec 2016

  • Designed and began manufacturing analog circuitry for a muscle biopotential amplifier
  • Developed and automated electronic characteristics testing procedures
Hybrid Lift Drone

Aug 2015 –

Dec 2015

  • Built a Hexacopter electrical autopiloted drone
  • Future expansion to triple redundant quadcopter
  • Assembled the flight electronics of the drone
Integrated Design Challenge Robot — Fundamentals of Electrical and Computer Engineering

Jan 2014 –

May 2014

  • Programmed a robot to sense its environment and act as communication hub for team
  • Wrote C++ communication and guidance libraries to ease implementation in other robots
Duke BMES Website

May 2015 –

May 2016

  • Wrote a website as a learning experiment for web development
  • Wrote plugin that pulls in facebook events, increasing the ease others can add content to the site

Skills

Programming Languages

JavaScript

TypeScript

Python

C/C++

Shell

Java

HTML5/CSS3

MIPS

Frameworks & Libraries

AngularJS (v1.x)

Vue

React

Node.js

Tools & DevOps

Docker

CMake

Jenkins

Design & Engineering

Altium

Autodesk Inventor

PSpice

Photoshop

Scientific Computing

MATLAB

Languages

Spanish

French

German