Freelance Junior Python Developer Jobs in New Jersey

Are you ready to make an impact at DTCC?
Do you want to work on innovative projects, collaborate with a dynamic and supportive team, and receive investment in your professional development? At DTCC, we are at the forefront of innovation in the financial markets. We are committed to helping our employees grow and succeed. We believe that you have the skills and drive to make a real impact. We foster a thriving internal community and are committed to creating a workplace that looks like the world that we serve.
The Information Technology group delivers secure, reliable technology solutions that enable DTCC to be the trusted infrastructure of the global capital markets. The team delivers high-quality information through activities that include development of essential, building infrastructure capabilities to meet client needs and implementing data standards and governance.
Pay and Benefits:

• Competitive compensation, including base pay and annual incentive
• Comprehensive health and life insurance and well-being benefits, based on location
• Pension / Retirement benefits
• Paid Time Off and Personal/Family Care, and other leaves of absence when needed to support your physical, financial, and emotional well-being.
• DTCC offers a flexible/hybrid model of 3 days onsite and 2 days remote (onsite Tuesdays, Wednesdays and a third day unique to each team or employee).

The Impact you will have in this role:
Being a member of IT Strategy & Business Management team, The Software Engineering role specializes in planning, documenting technical requirements, designing, developing, and testing all software systems and applications for the firm. Works closely with architects, product managers, project management, and end-users in the development and enhancement of existing software systems and applications, proposing and recommending solutions that solve complex business problems. This role is for a Senior Full-Stack Developer to own the design and delivery of scalable, cloud-hosted applications. This role combines React front-end development with Python/FastAPI backend services, with responsibility for technical quality, performance, and end-to-end solution design.
The Development family is responsible for creating, designing, deploying, and supporting applications, programs, and software solutions. May include research, new development, prototyping, modification, reuse, re-engineering, maintenance, or any other activities related to software products used internally or externally on product platforms supported by the firm. The software development process requires in-depth subject matter expertise in existing and emerging development methodologies, tools, and programming languages. Software Developers work closely with business partners and / or external clients in defining requirements and implementing solutions.
Your Primary Responsibilities:

• Lead development of front-end applications using React, ensuring scalability and performance
• Design and build high-throughput backend APIs using Python and FastAPI
• Own end-to-end feature delivery across UI, backend services, and data layers
• Design and optimize SQL queries, including support for Text-to-SQL workflows
• Integrate applications with analytics and data platforms such as Snowflake
• Drive containerized deployments using Docker and support routing with Nginx
• Apply and promote best practices for security, performance, and reliability
• Mentor junior developers and participate in architectural and code reviews
• Collaborate with product, DevOps, and data teams to shape technical solutions

**NOTE: The Primary Responsibilities of this role are not limited to the details above. **
Qualifications:

• Minimum of 6 years of related experience
• Bachelor's degree preferred and/or equivalent experience

Talents Needed for Success:

• 7+ years of professional full-stack development experience
• Strong hands-on expertise with:
  • React (front-end development)
  • Python and FastAPI (backend services)
  • SQL and data integration
• Experience deploying and operating containerized applications (Docker)
• Experience working in cloud-hosted environments

Nice to Have

• Experience with AWS EC2 or similar cloud infrastructure
• Familiarity with CI/CD pipelines and DevOps practices
• Experience supporting data-intensive or AI-enabled applications

The salary range is indicative for roles at the same level within DTCC across all US locations. Actual salary is determined based on the role, location, individual experience, skills, and other considerations. We are an equal opportunity employer and value diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, sex, gender, gender expression, sexual orientation, age, marital status, veteran status, or disability status. We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us to request accommodation.
About Us
With over 50 years of experience, DTCC is the premier post-trade market infrastructure for the global financial services industry. From 20 locations around the world, DTCC, through its subsidiaries, automates, centralizes, and standardizes the processing of financial transactions, mitigating risk, increasing transparency, enhancing performance and driving efficiency for thousands of broker/dealers, custodian banks and asset managers. Industry owned and governed, the firm innovates purposefully, simplifying the complexities of clearing, settlement, asset servicing, transaction processing, trade reporting and data services across asset classes, bringing enhanced resilience and soundness to existing financial markets while advancing the digital asset ecosystem. In 2024, DTCC's subsidiaries processed securities transactions valued at U.S. $3.7 quadrillion and its depository subsidiary provided custody and asset servicing for securities issues from over 150 countries and territories valued at U.S. $99 trillion. DTCC's Global Trade Repository service, through locally registered, licensed, or approved trade repositories, processes more than 25 billion messages annually. To learn more, please visit us at or connect with us on LinkedIn , X , YouTube , Facebook and Instagram .
DTCC proudly supports Flexible Work Arrangements favoring openness and gives people freedom to do their jobs well, by encouraging diverse opinions and emphasizing teamwork. When you join our team, you'll have an opportunity to make meaningful contributions at a company that is recognized as a thought leader in both the financial services and technology industries. A DTCC career is more than a good way to earn a living. It's the chance to make a difference at a company that's truly one of a kind.
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