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ARCHIVE · 0028
42.3601° N, 71.0589° W2026

Brian Maina

CS + Economics student building backend systems, quantitative tools, and fintech infrastructure.

CS × ECONBackend SystemsFintech InfraArchive · 0028

Currently building accessibility infrastructure at AdaptX, computational biology tooling at Marintchev Lab, and quantitative systems projects including Project Winston and a C++ order matching engine.

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CURRENT CITY·Boston, MA
CURRENTLY BUILDING·AdaptX · Marintchev Lab · Project Winston
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TRANSMISSION 01

About

Backend systems · AWS infrastructure · Quantitative research

·

Based in Boston, MA

I'm a Computer Science and Economics student at Boston University building software across backend infrastructure, financial systems, research automation, and data-heavy products. My work spans AWS-backed APIs, Redis/PostgreSQL systems, low-latency C++, quantitative research tools, and applied data pipelines.

BACKEND SYSTEMS

FastAPI, AWS ECS Fargate, PostgreSQL, Redis, Docker, REST APIs, async SQLAlchemy.

QUANTITATIVE TOOLS

C++ matching engines, market data replay, XGBoost/LightGBM models, HMM regime detection, and trading research infrastructure.

APPLIED DATA PIPELINES

NMR processing scripts, parsing/normalization workflows, LLM-assisted categorization, and production-style data processing.

Education

B.A. in Computer Science and Economics — Boston University

Expected May 2028

Relevant coursework: Data Structures, Algorithms, Computer Systems, Software Engineering, Distributed Systems, Databases, Game Theory, Empirical Economics, Linear Algebra & Discrete Math.

Activities: Hack4Impact, Engineers Without Borders, Alpha Kappa Psi, Nu-Chapter Consulting Group.

ARCHIVE 02

Featured Work

Project Winston

Quant Research

Quantitative trading research platform covering 17 commodity futures and 503 S&P 500 names. Stacked XGBoost/LightGBM classifiers with walk-forward OOS validation, HMM regime detection, and an 11-agent reasoning layer.

  • Covers 17 commodity futures and 503 S&P 500 names.
  • Stacked XGBoost/LightGBM classifiers with walk-forward OOS validation and HMM regime detection.
  • 11-agent reasoning layer with async Anthropic SDK agents cross-checking ML signals against an overseer.
  • Backend: FastAPI, async SQLAlchemy, Alembic, APScheduler, Redis caching, and async job orchestration.

17 futures · 503 S&P names · 11-agent reasoning layer

PythonFastAPIPostgreSQLRedisDockerXGBoostLightGBMasync SQLAlchemyAPScheduler
GitHub

Order Matching Engine

Low Latency

C++17 limit order book matching engine with real LOBSTER NASDAQ data. Replayed 269K messages at 0.5M+ events/sec with a lock-free SPSC queue and 16 passing GoogleTest cases.

  • Replayed 269K LOBSTER NASDAQ messages at 0.5M+ events/sec.
  • 70% snapshot agreement versus ground truth.
  • Lock-free SPSC queue with alignas(64) padding to reduce false sharing.

269K messages · 0.5M+ events/sec · 70% snapshot agreement

C++17GoogleTestLOBSTER NASDAQLock-Free QueueMarket Data
GitHub

TriLive

Real-Time Transit

Real-time transit tracking iOS app with FastAPI, PostgreSQL, Redis, APScheduler, Docker, and React Native. Shipped to the Apple App Store with 70+ active users.

  • Reduced lookup latency 32× from 16ms to 0.5ms using Redis caching.
  • Shipped to the Apple App Store with 70+ active users.
  • Containerized FastAPI, PostgreSQL, and Redis with Docker.

70+ users · 32× latency reduction · App Store

FastAPIPostgreSQLRedisAPSchedulerDocker
GitHubLive

StatementWrapped

Fintech Analytics

AI-powered bank statement analyzer with multi-bank CSV normalization, LLM-powered transaction categorization, and Redis caching. Live at statement-wrapped.vercel.app.

  • Normalizes CSV exports across multiple bank formats.
  • LLM-powered transaction categorization pipeline.
  • Redis caching for faster repeated analysis.
  • Live deployment with active users.

4 bank formats · 6 REST endpoints · ~1ms normalization

FastAPIReactRedisPostgreSQLLLMsCSV Normalization
GitHubLive

ADDITIONAL WORK

Archive

Earlier and smaller projects — kept for context.

NutriCheck

Android barcode scanning app that evaluates food products against user medical conditions and dietary restrictions using a weighted health scoring algorithm.

JavaAndroid
GitHub

QuantSnap

Stock analysis platform for evaluating and ranking equities across multiple signals, sectors, and live market data in a Bloomberg-inspired interface.

PythonStreamlitPlotlyFastAPI
GitHubLive

TabStream

May 2025

Chrome extension for guitarists that reads YouTube music videos and surfaces guitar tab resources with an AI sidebar for chord, difficulty, and technique questions.

JavaScriptHTMLCSSChrome Extensions API
GitHub

Cerco

Student events app for campus discovery — create, browse, save, RSVP to, and map events with student-only authentication and real-time updates.

React NativeExpoFirebaseFirestore
GitHub

Logistik

Aug 2023 – Apr 2024

Java desktop logistics system for truck and driver management with role-based login, MySQL persistence, filtering, and dashboard-style capacity visualization.

JavaJava SwingMySQLJDBC
GitHubDemo

RELAY 03

Signal

GitHub activity

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Contributions this year

847

Current streak

12 days

Public repos

24

LOG 04

Experience

B.A. in Computer Science and Economics

In progress
Expected May 2028

Boston University

  • Relevant coursework: Data Structures, Algorithms, Computer Systems, Software Engineering, Distributed Systems, Databases, Game Theory, Empirical Economics, Linear Algebra & Discrete Math.
  • Activities: Hack4Impact, Engineers Without Borders, Alpha Kappa Psi, Nu-Chapter Consulting Group.

Software Engineer Intern

CurrentAccessibility Infra
May 2026 – Present

AdaptX

Nonprofit Fitness Accessibility Platform

  • Building a mobile app and REST API backend for an amputee rehabilitation platform using AWS ECS Fargate, RDS, S3, and FastAPI.
  • Integrating Zeffy, RunSignUp, JotForm, and Bloomerang APIs into a unified donation and CRM backend.
  • Developing FastAPI endpoints supporting physician-patient messaging, scheduling, and donation flows.
  • Contributing to a cross-functional engineering platform supporting a $50K Amazon Accessibility grant application.
FastAPIAWS ECS FargateRDSS3REST APIs

Undergraduate Research Assistant

CurrentNMR Pipeline
Mar 2026 – Present

Marintchev Lab

BU Dept. of Pharmacology, Physiology & Biophysics

  • Building a semi-automated NMR backbone assignment pipeline in Python for protein structural analysis.
  • Engineering a scoring pipeline ranking peak candidates against reference shift data and integrating it into the lab workflow.
  • Developing parse, normalize, and export scripts for spectral output processing across multiple experiment types.
  • Standardizing input formats for downstream assignment software, reducing manual data handling for research staff.
PythonData PipelinesScientific ComputingNMRParsing

Member

Jan 2026 – Present

Hack4Impact

  • Participate in weekly engineering workshops focused on software for social impact.
  • Engage with technical curriculum and professional panels around mission-driven tech.

Software Engineer Intern

EdTech Backend
Sep 2025 – Dec 2025

Portal

EdTech Startup

  • Built ATS resume-scoring feature with PDF/JSON ingestion across 3 formats, improving accuracy by 25%.
  • Reduced ATS response time using Redis caching with 24-hour TTL on hot resume data and parsed outputs.
  • Wrote 360+ Jest/Supertest tests across auth, account recovery, and payments flows, cutting QA time by ~60%.
Node.jsRedisJestSupertestPDF/JSON Parsing

Treasurer

May 2025 – Present

Boston University German Culture Club

  • Manage a $1,780 semester budget across events, reimbursements, and purchase requests.
  • Grew membership by 55%, from 60 to 93 members.

Assistant Technical Lead

Sep 2024 – May 2025

Engineers Without Borders

  • Led outreach for the Ogiek Kwanza Project.
  • Reduced well-construction quotation turnaround by 30% by coordinating 5+ engineers.

Education & Extracurriculars

Internships & Experience

DOCK 05

Tools

Languages

PythonC++JavaScriptTypeScriptSQLJava

Frameworks & Libraries

FastAPISQLAlchemyReactReact NativeNode.jsPyTorchXGBoost

Databases & Infrastructure

PostgreSQLRedisDockerAWS ECS FargateAWS S3AWS RDSAlembicAPScheduler

Tools & Platforms

GitGitHub ActionsJestSupertestpytestGoogleTestVercelRailway

Certifications

AWS Certified Cloud PractitionerCLF-02
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TRANSMISSION 06

Let's build something useful.

Reach out for collaborations or opportunities.

bmmaina@bu.eduGitHubLinkedInResume
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