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Freelance Full Stack Software Engineer Jobs in Miami, FL

Citadel

Full Stack Software Engineer

Miami, FL · On-site

As a Full Stack Software Engineer, you'll build the next generation of applications used by Options traders to price markets, execute trades, monitor and manage trading engines, visualize risk, and ...

New

CYNET SYSTEMS

Full-Stack Software Engineer

Sunrise, FL · On-site

$45 - $50/hr

Proficiency in Java 8, Kotlin, reactive programming, and Vert.x. Experience with Python is a plus. Experience with machine learning is a plus. Experience building fault tolerant, high scalable APIs.

CYNET SYSTEMS

Full-Stack Software Engineer

Sunrise, FL · On-site

$45 - $50/hr

Proficiency in Java 8, Kotlin, reactive programming, and Vert.x. * Experience with Python is a plus. * Experience with machine learning is a plus. * Experience building fault tolerant, high scalable ...

AgileEngine

Full Stack Engineer ID80989

Miami, FL · On-site

AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and ... ABOUT THE ROLE We are looking for a Full Stack Engineer to build and maintain features across a ...

AgileEngine

Full Stack Engineer ID80989

Miami, FL · On-site

AgileEngine is an Inc. 5000 company that creates award-winning software for Fortune 500 brands and ... ABOUT THE ROLE We are looking for a Full Stack Engineer to build and maintain features across a ...

eMed LLC.

Senior Software Engineer (Full Stack)

Miami, FL · On-site

$90 - $120/hr

Senior Software Engineer (Full Stack) * Department: Engineering * Location: Downtown Miami, FL * Reports to: Engineering Lead Purpose of Role eMed's innovative GLP-1 platform already serves more than ...

eMed

Senior Software Engineer (Full Stack)

Miami, FL · On-site

$120 - $180/hr

Senior Software Engineer (Full Stack) Department: Engineering Location: Downtown Miami, FL Reports to: Engineering Lead 2. Detailed Information 2.1 PURPOSE OF ROLE eMed's innovative GLP-1 platform ...

Donato Technologies, Inc

Full Stack Developer

Miramar, FL · On-site

$48 - $52/hr

What You Bring * 7+ years of software engineering experience * Expertise in Next.js, React, Java, and enterprise-scale full-stack development. * Experience building custom, proprietary products from ...

Mercor

Senior Full Stack Developer

Miami, FL · Remote

$80 - $130/hr

Senior Software Engineer Expert Type: Contract Compensation: $80-$130/hour Location: Remote Role Responsibilities * Design, develop, and maintain full-stack applications using Python . * Build and ...

AerSale Holdings

Full Stack Developer

Doral, FL · On-site

AerSale is seeking a Full Stack Developer to join our Application Development team in Doral, FL. In ... Education and Experience: * 3-5 years of professional full stack software development experience

New

Revolutional, LLC

Full Stack Engineer

Miami, FL · Remote

$110/hr

Full Stack Engineer Location: Remote Terms: Full-time Salary Range: $110-160k DOE Clearance ... Conduct software analysis, programming, testing, and debugging activities. * Analyze user ...

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All JobsFull Stack Software Engineer JobsFreelance Full Stack Software Engineer JobsFreelance Full Stack Software Engineer Jobs in Miami, FL

Freelance Full Stack Software Engineer information

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$42.6K

$128.9K

$182.2K

How much do freelance full stack software engineer jobs pay per year?

As of Aug 16, 2026, the average yearly pay for freelance full stack software engineer in Miami, FL is $128,900.00, according to ZipRecruiter salary data. Most workers in this role earn between $106,200.00 and $151,100.00 per year, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a freelance full stack software engineer?

To thrive as a Freelance Full Stack Software Engineer, you need strong proficiency in both front-end (e.g., HTML, CSS, JavaScript) and back-end (e.g., Node.js, Python, databases) development, often supported by a relevant degree or portfolio of work. Familiarity with version control systems like Git, cloud platforms such as AWS or Azure, and frameworks like React and Django is typically required. Exceptional communication, self-motivation, and time management skills help you manage client relationships and deliver projects independently. These competencies ensure you can handle diverse project requirements, maintain client trust, and consistently deliver high-quality, end-to-end solutions.

What are some common challenges faced by freelance full stack software engineers, and how can they be managed?

Freelance full stack software engineers often navigate challenges such as managing client expectations, balancing multiple projects, and keeping up with rapidly evolving technologies. Communication is key—setting clear project milestones and maintaining regular updates helps ensure alignment with clients. Additionally, effective time management and continuous learning are vital to juggling diverse tasks and staying competitive in the field. Building a reliable professional network can also help with referrals and collaborative opportunities.

What does a freelance full stack software engineer do?

A Freelance Full Stack Software Engineer is an independent contractor who designs, develops, and maintains both the front-end (client-side) and back-end (server-side) components of web or software applications. They work with a variety of programming languages, frameworks, and tools to build complete, functional products for clients or companies. Their responsibilities often include gathering project requirements, coding, debugging, deploying applications, and sometimes managing databases or cloud infrastructure. Freelance full stack engineers have the flexibility to choose their projects and clients, often working remotely or on a contract basis.

What are the most commonly searched types of Full Stack Software Engineer jobs in Miami, FL?

The most popular types of Full Stack Software Engineer jobs in Miami, FL are:

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For Freelance Full Stack Software Engineer jobs in Miami, FL, the most frequently searched job titles are:

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Freelance Full Stack Software Engineer jobs near you
Infographic showing various Freelance Full Stack Software Engineer job openings in Miami, FL as of August 2026, with employment types broken down into 1% Internship, 85% Full Time, 11% Part Time, and 3% Contract. Highlights an 86% Physical, 4% Hybrid, and 10% Remote job distribution, with an average salary of $128,900 per year, or $62 per hour.

Full Stack Software Engineer

Citadel

Miami, FL • On-site

Other

Posted 2 days ago

New

Job description

Job Description
Role Overview:
Options market making presents a unique challenge in combining massive scale with complex financial workflows. Every day, Citadel Securities processes billions of market events across more than a million listed options while delivering pricing, execution, and risk management with extremely low latency.
The Options Trading Workflow Team builds the applications and services that power how traders price, manage, and execute options trading strategies. We develop the next generation of high-touch trading and pricing tools that sit at the intersection of sophisticated backend systems and intuitive user experiences, enabling traders to make faster, smarter decisions in real time.
As a Full Stack Software Engineer, you'll build the next generation of applications used by Options traders to price markets, execute trades, monitor and manage trading engines, visualize risk, and launch new products. You'll own end-to-end development across modern web frontends, distributed backend services, and real-time data pipelines while partnering directly with traders, quantitative researchers, and business leaders to design workflows that have immediate impact on global trading.
You'll help shape the evolution of Citadel Securities' global Options platform by building software that supports new markets, exchanges, and trading capabilities while solving some of the most challenging engineering problems in electronic trading.
If you're excited by solving challenging distributed systems problems while creating high-performance user experiences that directly impact trading, this is an opportunity to shape the future of one of the world's leading market makers.
Opportunities may be available from time to time in any location in which the business is based for suitable candidates. If you are interested in a career with Citadel, please share your details and we will contact you if there is a vacancy available.
Location:
Hong Kong, Sydney
Responsibilities:
  • Help define and build the next generation of high-touch pricing and trading workflow applications for Options traders.
  • Partner directly with traders, quantitative researchers, and business leaders to design workflows that improve pricing, execution, and risk management.
  • Build full stack applications spanning modern web frontends, backend services, APIs, and distributed systems.
  • Develop intuitive, high-performance user interfaces that enable traders to research, monitor, price, and execute trades in real time.
  • Design scalable backend services that support pricing, workflow orchestration, market data, and trading operations.
  • Build next-generation click trading applications that allow traders to rapidly view market depth, manage orders, and execute complex trading strategies.
  • Develop applications that enable traders to monitor, configure, and control distributed pricing and trading engines, providing real-time visibility into system health, trading state, and operational workflows.
  • Build sophisticated risk visualization and decision-support tools that help traders understand portfolio risk, pricing behaviour, and execution opportunities in rapidly changing markets.
  • Design workflow applications that seamlessly integrate pricing, execution, market data, and risk management into intuitive user experiences.
  • Build systems that enable Citadel Securities to support new markets, exchanges, and option products as the global Options business continues to expand.
  • Prototype new ideas rapidly and evolve them into robust, production-grade systems.
  • Continuously improve the performance, scalability, stability, and usability of mission-critical trading applications.
  • Collaborate across engineering, quantitative research, and trading teams to translate complex financial concepts into intuitive software.

Qualifications:
  • Strong experience building full stack applications using modern frontend and backend technologies.
  • Proficiency with TypeScript and React.
  • Experience designing scalable backend services using C++ or Python.
  • Experience building distributed systems and service-oriented architectures.
  • Experience developing real-time, high-performance applications.
  • Strong understanding of API design, asynchronous systems, and event-driven architectures.
  • Passion for creating intuitive user experiences through thoughtful interaction design and rapid prototyping.
  • Strong analytical and problem-solving skills with the ability to solve open-ended technical challenges.
  • Excellent communication and collaboration skills.
  • Bachelor's or Master's degree in Computer Science or equivalent practical experience.

Preferred
  • Experience working with trading systems, financial markets, or capital markets technology.
  • Knowledge of options, derivatives, OTC products, or market structure.
  • Experience building visualization tools for complex datasets.
  • Experience designing software in close partnership with end users.

Why This Role Is Unique
  • Build software that directly influences how Options traders price markets, execute trades, manage risk, and operate trading systems.
  • Own products end-to-end across the full technology stack, from modern React frontends to distributed backend services.
  • Work directly with traders and quantitative researchers to rapidly transform ideas into production systems with immediate business impact.
  • Build technology that enables Citadel Securities to expand into new products, exchanges, and global markets.
  • Solve challenging engineering problems involving distributed systems, low-latency applications, large-scale data processing, and sophisticated user experiences.
About Citadel Securities
Citadel Securities is a technology-driven, next-generation global market maker. We provide institutional and retail investors with world-class liquidity, competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers, traders and researchers harness leading-edge quantitative research and the accelerating power of compute, machine learning and AI to power our analytics and tackle the market's and our clients' most critical challenges. Together, we are forging the future of capital markets. For more information, visit citadelsecurities.com .

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