Senior Full-Stack Engineer (Fintech)
OHLCX | Remote | Full-time
About OHLCX
OHLCX is a broker-connected trading platform that helps traders manage orders, define entry and exit strategies, and automate trading workflows through their existing brokerage accounts.
Originally developed as an internal engineering project for managing large-scale algorithmic trading systems, OHLCX has evolved into a platform combining advanced order management, strategy-building tools, brokerage integrations, and developer APIs.
We're a small, engineering-focused team building trading technology for active traders, fintech teams, registered investment advisers (RIAs), and proprietary trading desks. Our focus is on developing reliable, flexible trading infrastructure that supports sophisticated trading workflows.
About the Role
We're looking for an experienced Senior Full-Stack Engineer to help develop, maintain, and expand the OHLCX platform.
You'll work directly with our CTO across backend architecture, frontend development, API integrations, and infrastructure. This is a hands-on role with significant technical ownership, from initial planning and development through testing, deployment, and ongoing improvements.
You'll also contribute to architectural decisions, development practices, and engineering standards as the platform grows.
Because our software supports live trading, performance, reliability, and attention to detail are essential.
Key Responsibilities
Design, develop, and maintain backend services, database models, and system integrations.
Build responsive, intuitive, and keyboard-friendly trading interfaces.
Develop, document, test, and maintain RESTful APIs and third-party integrations.
Work on brokerage connectivity, market data integrations, and order management functionality.
Optimize database performance through effective schema design, query optimization, and data integrity practices.
Develop and maintain automated testing, CI/CD pipelines, Docker-based deployment workflows, and cloud infrastructure.
Troubleshoot technical issues, identify performance bottlenecks, and improve system reliability and security.
Participate in code reviews and contribute to technical documentation and engineering best practices.
Take ownership of features throughout the software development lifecycle, from technical design to production deployment.
Technical Stack
Backend Development
PHP, Laravel
LAMP/LEMP environments
SQL/T-SQL, MySQL
Python, Rust
Frontend Development
JavaScript, TypeScript
React, React Native
HTML, CSS
APIs & Integrations
RESTful APIs
GraphQL
Brokerage and third-party API integrations
Infrastructure & Development Tools
Docker
Git and GitHub
CI/CD pipelines
Automated testing and deployment workflows
Required Qualifications
5+ years of professional software engineering experience, including substantial full-stack development experience.
Advanced proficiency in PHP and Laravel, with experience building and maintaining production applications.
Strong knowledge of JavaScript, TypeScript, React, HTML, and CSS.
Experience working with LAMP and/or LEMP environments.
Strong MySQL and relational database experience, including schema design, complex queries, performance optimization, and data integrity.
Proven experience designing, developing, integrating, and testing RESTful APIs.
Hands-on experience with Docker, GitHub, and CI/CD pipelines.
Solid understanding of software architecture, application security, performance optimization, and automated testing.
Ability to independently manage technical work from initial requirements through production deployment.
Strong analytical, debugging, and problem-solving skills.
Clear communication skills and the ability to collaborate effectively in a remote environment.
Preferred Qualifications
Experience with React Native, GraphQL, Python, or Rust.
Familiarity with T-SQL and Microsoft SQL Server.
Knowledge of financial markets, trading platforms, brokerage APIs, or market data integrations.
Understanding of trading order types, including OCO, OTOCO, trailing stops, and automated order management.
Experience developing AI-powered applications or working with LLMs, AI agents, or MCP.
Experience working in fintech, a startup, or a small engineering team.
Work Environment & Schedule
Employment Type: Full-time
Location: Fully remote, open to candidates worldwide
Schedule: Monday through Friday, during U.S. Eastern Time (ET) business hours
Equal Opportunity Employer
OHLCX is an equal opportunity employer. We consider all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, or any other characteristic protected by applicable law.