Matthew Codes Tech
Matthew

Back-end Problem Solver

Performance · Bugs · Legacy Systems

Poor backend performance and hard-to-maintain systems don't just slow products — they increase infrastructure and development costs. I help teams fix performance issues and design backend systems that stay efficient and maintainable as they grow.

Looking to hire? Reach out and view my verified work history on Upwork.

My Strengths

Performance

Experienced in optimizing APIs, database queries, and distributed systems for performance and reliability.

Security

Experienced in identifying and mitigating common web security risks, including IDOR, SQL Injection, broken access control, credential abuse, and insecure API implementations.

Work

Comfortable working independently while also collaborating closely with team members and stakeholders.

Correctly

Strong believer in solving complex problems with simple, maintainable solutions and ensuring code quality through comprehensive unit testing.

Skills

Programming languages

TypeScriptJavaScriptPHPSolidityHTMLCSS

Frameworks and Platforms

Node.jsNestJSExpressJSMolecularPHPCakePHPLaravelVueJSReactJSTypeORMPrismaKnexSequelizeDockerK8SAWSLensRancherVault

Queue

BullMQKafkaSQSRabbitMQGearman

Database

PostgreSQLMySQLMongoDBRedis

IDE

WebStormPhpStorm

Version control

GitHubGitLab

My Experience

  1. Senior Back-end Engineer

    Salary Hero

    May 2024 - Present

  2. Senior Back-end Blockchain

    FIS

    Oct 2023 - May 2024

  3. Senior Back-end Blockchain

    VMO

    Sep 2022 - Oct 2023

  4. Tech Lead Blockchain

    Sotatek

    Apr 2021 - Dec 2022

  5. Full-stack Developer

    GHTK

    Jan 2019 - Apr 2021

Education

Greenwich University

Computer Science, 2017 - 2021

Awards

Master Dev at GHTK

December 2019

Awarded the Master Developer Recognition for delivering high-impact engineering initiatives and driving process automation across critical payroll systems. Key contributions included building automated payroll investigation tools, developing self-service diagnostics for payroll discrepancies, and optimizing payroll processing workflows, reducing payroll calculation time from 3 days to approximately 15 minutes. Recognized for consistently leading complex technical initiatives, improving operational efficiency, and making significant contributions across multiple core business systems.

Best Student in Web Development

Spring 2019

Independently designed and developed a full-stack e-commerce platform from scratch, including frontend, backend, database design, cloud infrastructure, security, and deployment.

Best Student in Security

Spring 2019

Studied and demonstrated common cybersecurity threats such as SQL Injection, XSS, brute-force attacks, network packet analysis, and web application vulnerabilities, along with industry-standard prevention and mitigation techniques.