Explore 3 python test software developer jobs from 3 hiring companies in Yulee, FL, US. Filter by remote, salary, experience, and company, then open any listing to apply.

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Python Test Software Developer

Jacksonville

St. Marys

Fernandina Beach

Kingsland

Jacksonville Beach

Atlantic Beach

Ponte Vedra Beach

Palm Valley

Oakleaf Plantation

Lakeside

Fruit Cove

St. Johns

Brunswick

Bellair-Meadowbrook Terrace

Fleming Island

Saint Simon Mills

Nassau Village-Ratliff

Saint Simons Island

Middleburg

Python Test Software Developer Jobs

Citi

Intercontinental Exchange

Star Catcher

Onsite

Hybrid

Overview Job PurposeAt ICE, we are united by a common mission and a commitment to constant progress. Our team consists of dedicated problem‑solvers and partners who start with the customer’s needs, transforming challenges into meaningful opportunities. Driven by a start‑up mindset, we stay agile, adaptable, and ready to move quickly. We embrace a culture of ownership, empowering every team member to make decisions that drive the business forward. As one company, we collaborate across teams to support shared growth and success. We believe in open, constructive debate to uncover the best solutions before moving forward together. Integrity and passion guide our work, ensuring we help customers achieve stronger performance. With deep expertise and genuine enthusiasm, we combine expanding knowledge and advanced technology to consistently deliver results, innovative solutions, and new possibilities for our customers and stakeholders. Every day, we are committed to making a meaningful impact on global markets. The Developer, Release Engineering plays a key role in infrastructure development within the Engineering Development Solutions team. This team designs and maintains processes that improve infrastructure delivery management through application development, data management, and automation. In this role, you will develop code‑driven solutions quickly and effectively to provide real value to the organization. Your primary focus will be building internal tools that strengthen our continuous integration infrastructure and directly support our development teams. Responsibilities<ul type="disc"><li>Design, build, and maintain full‑stack applications using modern frontend and backend technologies.</li><li>Develop and support backend services and APIs leveraging Node.js, Python, or Golang as core programming languages.</li><li>Create scalable, responsive, and well-structured frontend components using contemporary JavaScript frameworks.</li><li>Integrate with and develop RESTful APIs to power internal systems and organizational platforms.</li><li>Partner with Release Engineering, Infrastructure, and product teams to gather requirements and deliver high‑quality solutions.</li><li>Contribute to automation efforts that strengthen CI/CD pipelines and optimize release processes.</li><li>Write clean, secure, and thoroughly tested code that aligns with engineering best practices.</li><li>Participate in code reviews, design discussions, and initiatives focused on continuous improvement.</li></ul> Knowledge and Experience<ul type="disc"><li>Bachelor’s degree in computer science, Information Systems, or a related field, or equivalent hands-on experience.</li><li>8+ years of professional software development experience.</li><li>Strong practical experience with Node.js for backend development.</li><li>Proficiency with JavaScript / TypeScript and modern frontend frameworks (such as React, Angular, or similar).</li><li>Experience building and integrating RESTful APIs.</li><li>Working knowledge of databases, including relational schema design and data modeling.</li><li>Familiarity with Linux or Windows operating environments.</li><li>Basic understanding of CI/CD concepts and tools.</li><li>Experience with unit testing and automated testing methodologies.</li><li>Strong problem-solving abilities and attention to detail.</li><li>Ability to communicate effectively with both technical and non-technical stakeholders.</li></ul> Preferred Skills <ul type="disc"><li>Exposure to containerization or infrastructure tools such as Docker, Terraform, or Ansible.</li><li>AI/ML exposure (good to have), such as:</li><li>Integrating AI-powered services or APIs into applications</li><li>Basic understanding of AI/ML concepts, model inference, or prompt-based systems</li><li>Awareness of data quality, performance, and responsible AI considerations</li><li>Familiarity with observability, logging, or monitoring tools.</li><li>Experience working on internal developer platforms or tooling.</li></ul> What We Look For <ul type="disc"><li>A collaborative developer who takes ownership and delivers reliable solutions.</li><li>Someone comfortable working across the stack and eager to learn new technologies.</li><li>A team player who values code quality, automation, and continuous improvement.</li><li>A customer-focused mindset with an interest in building tools that improve developer experience.</li></ul>#LI-SH3#LI-ONSITE Intercontinental Exchange, Inc. is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to legally protected characteristics.

Senior Developer

8+ years software development; Node.js backend; JavaScript/TypeScript; REST APIs; frontend frameworks; CI/CD basics; Linux/Windows; unit tests.

Citi, the leading global bank, has approximately 200 million customer accounts and does business in more than 160 countries and jurisdictions. Citi provides consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management.As a bank with a brain and a soul, Citi creates economic value that is systemically responsible and in our clients’ best interests. As a financial institution that touches every region of the world and every sector that shapes your daily life, our Enterprise Operations &amp; Technology teams are charged with a mission that rivals any large tech company. Our technology solutions are the foundations of everything we do from keeping the bank safe, managing global resources, and providing the technical tools our workers need to be successful to designing our digital architecture and ensuring our platforms provide a first-class customer experience. We reimagine client and partner experiences to deliver excellence through secure, reliable, and efficient services.Our commitment to diversity includes a workforce that represents the clients we serve from all walks of life, backgrounds, and origins. We foster an environment where the best people want to work. We value and demand respect for others, promote individuals based on merit, and ensure opportunities for personal development are widely available to all. Ideal candidates are innovators with well-rounded backgrounds who bring their authentic selves to work and complement our culture of delivering results with pride. If you are a problem solver who seeks passion in your work, come join us. We’ll enable growth and progress together.Position Overview: The Senior Generative AI &amp; Testing Efficiency Developer is a senior-level role responsible for leading the design, development, and implementation of complex application systems. This position partners closely with technology, architecture, QA, and business teams to drive system enhancements, modernize platforms, and deliver high-impact solutions. The role is especially focused on advancing AI-powered and generative AI–driven testing capabilities across the enterprise.<div><h3></h3><h2>Application Development &amp; Technical Leadership:</h2><ul><li>Lead applications systems analysis, design, and programming activities in alignment with Citi’s enterprise architecture.</li><li>Partner with multiple management teams to integrate systems, deploy new products, and enable process improvements.</li><li>Resolve high-impact, complex problems through deep analysis of business processes, system flows, and industry standards.</li><li>Establish standards for coding, testing, debugging, and implementation.</li><li>Develop a strong understanding of how architecture, infrastructure, and applications integrate to achieve business goals.</li><li>Provide technical mentorship and coaching to mid-level developers and analysts; allocate work as needed.</li><li>Assess and manage risk in all technical and business decisions, ensuring compliance with laws, regulations, internal policies, and ethical standards.</li></ul><h3></h3><h2>AI‑Driven &amp; Generative AI Testing:</h2><ul><li>Design and implement AI-powered testing solutions, including:<ul><li>AI‑generated test cases</li><li>Intelligent regression selection</li><li>Self‑healing automation</li><li>Automated defect and failure analysis</li></ul></li><li>Develop and optimize LLM-based tools for:<ul><li>Test data generation and scenario creation</li><li>Requirements-to-test traceability</li><li>Predictive test failure analysis</li></ul></li><li>Embed generative AI capabilities into existing automation frameworks (e.g., Selenium, Playwright).</li><li>Implement advanced GenAI techniques such as prompt engineering and Retrieval‑Augmented Generation (RAG) to enhance testing intelligence.</li><li>Integrate AI-driven testing accelerators into CI/CD pipelines to reduce cycle time and improve stability.</li><li>Support deployment, scalability, monitoring, and optimization of AI models in production environments.</li><li>Contribute to real-time and streaming AI systems that enable continuous testing and rapid feedback loops.</li><li>Ensure compliance with Responsible AI principles, data privacy requirements, governance standards, and quality controls.</li><li>Stay current with emerging trends in generative AI and test automation; evangelize best practices across the organization.</li><li>Mentor junior engineers and QA automation developers on AI-assisted testing methodologies.</li></ul><h2></h2><h2>Required Technical Skills:</h2><ul><li>Strong hands-on experience with LLM development, fine-tuning, and optimization.</li><li>Expertise in RAG systems, hybrid search, and vector retrieval.</li><li>Proficiency with ML frameworks such as PyTorch, TensorFlow, and Keras, including distributed training.</li><li>Experience with GenAI tools and libraries including LangChain, LlamaIndex, LangGraph, Crew.ai, Autogen, Hugging Face, and cloud GenAI APIs (e.g., OpenAI, Claude, Gemini).</li><li>Strong understanding of test automation frameworks (Selenium, Playwright).</li><li>Experience integrating AI capabilities into testing pipelines (AI-generated tests, self-healing scripts, test impact analysis).</li><li>Solid knowledge of CI/CD systems with a focus on continuous testing.</li><li>Familiarity with QA methodologies, test strategy, functional and non-functional testing, and quality metrics.</li><li>Advanced Python skills for automation tooling, data preprocessing, API development, and AI workflows.</li><li>Experience with containerization and deployment technologies (Docker, Kubernetes).</li><li>Practical knowledge of model optimization techniques.</li><li>Strong understanding of AI governance, model guardrails, testing risk frameworks, and Responsible AI practices.</li><li>Excellent collaboration and communication skills, with the ability to explain AI-driven testing strategies to both technical and non-technical audiences.</li><li>Analytical, proactive mindset with a passion for experimentation, innovation, and mentoring.</li></ul><h2></h2><h2>Qualifications:</h2><ul><li>6&#43; years of relevant experience in applications development or systems analysis.</li><li>Extensive experience in systems analysis and software application development.</li><li>Proven success leading and delivering complex projects.</li><li>Subject Matter Expert (SME) in at least one area of applications development.</li><li>Demonstrated leadership, adaptability, and project management skills.</li><li>Consistently strong written and verbal communication skills.</li></ul><h2></h2><h2>Education: </h2><ul><li>Bachelor’s degree or equivalent practical experience required.</li><li>Master’s degree preferred.</li></ul></div> This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.------------------------------------------------------Job Family Group: Technology------------------------------------------------------Job Family:Applications Development------------------------------------------------------Time Type:Full time------------------------------------------------------Primary Location:Irving Texas United States------------------------------------------------------Primary Location Full Time Salary Range:$125,760.00 - $188,640.00 In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental &amp; vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.------------------------------------------------------Most Relevant Skills Please see the requirements listed above.------------------------------------------------------Other Relevant Skills Artificial Intelligence (AI), Java, Large Language Models (LLMs), Machine Learning (ML), Playwright (Software), Python (Programming Language), QA Automation, Selenium, Software Development.------------------------------------------------------Anticipated Posting Close Date:Apr 28, 2026------------------------------------------------------Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review <a href="https://www.citigroup.com/citi/accessibility/application-accessibility.htm" target="_blank">Accessibility at Citi</a>. View Citi’s <a href="https://www.citigroup.com/global/eeo-aa-policy" target="_blank">EEO Policy Statement</a> and the <a href="https://www.eeoc.gov/sites/default/files/2023-06/22-088_EEOC_KnowYourRights6.12ScreenRdr.pdf" target="_blank">Know Your Rights</a> poster.

Senior Generative AI & Testing Efficiency Developer, Vice President

Senior Generative AI & Testing Efficiency Developer

Lead design and development of AI-powered testing solutions; senior software development and AI expertise; experience with LLMs, GenAI, CI/CD, QA/testing.

<div>
 Star Catcher Industries, Inc. (Star Catcher) has an opportunity for a Spacecraft ADCS Engineer to support the development of space-to-space power beaming spacecraft and the Star Catcher Network, its orbital power grid.
 </div><h3>Description</h3><div>
 <div>
 Star Catcher Industries, Inc. (Star Catcher), located in Jacksonville, FL, has an opportunity for a Spacecraft ADCS Engineer to support the development of space-to-space power beaming spacecraft and the Star Catcher Network, its orbital power grid. This role will be responsible for the design, development, and operation of spacecraft, satellites, and other space-related ADCS systems. This includes the systems integration, analysis and simulation, project management, testing and quality assurance, mission operations, and regulatory compliance and safety of space-related designs.Responsibilities:<ul><li>Responsible for the spacecraft ADCS subsystem design.</li><li>Design and implement guidance &amp; control algorithms in an embedded software environment.</li><li>Define requirements for ADCS subsystem.</li><li>Guide GNC hardware procurement.</li><li>Guide the development of ADCS component emulators in integrated modeling environments.</li><li>Collaborate with internal stakeholders and vendors to validate hardware systems.</li><li>Design the ADCS verification and validation approach for the spacecraft including environmental and acceptance testing.</li><li>Ensure documentation is accurate and complies with company standards.</li><li>Manage project timelines, resources, and budgets related to aerospace engineering tasks.</li></ul>Ideal Experience:<ul><li>Bachelor’s degree in Software Engineering, or a related field</li><li>At least five years of experience designing, analyzing and building software in an aerospace environment or other relevant industry experience.</li><li>Software skills in C, C++.</li><li>Knowledge of control and optimization theory.</li><li>Expertise in numerical programming environments (Python, MATLAB,etc.).</li><li>Familiarity with ADCS design and simulation for spacecraft systems.</li><li>Experience running dynamic simulations for spacecraft.</li><li>Proven track record in the successful design and development of software systems for either terrestrial or satellite applications.</li><li>Creative problem-solving skills, with the capability to develop innovative solutions to advanced engineering challenges.</li><li>Strong understanding of the unique requirements and challenges associated with aerospace systems for space missions.</li></ul>Desired skills:<ul><li>Expertise in advanced ADCS design and integration techniques.</li><li>Demonstrated ability to drive innovation in ADCS design and implementation, contributing to the development of cutting-edge space technologies.</li><li>Familiarity with space industry regulations, safety standards relevant to space missions and operations.</li><li>Effective communication skills with the ability to interface with the team and organization and prioritize tasks, projects, and personnel from a variety of disciplines.</li><li>Experience with spacecraft flight operations.</li><li>Hands-on experience building test setups for ADCS components.</li></ul> Help us deploy and scale space infrastructure that will drive our utilization of space forward! We offer a highly competitive benefits package.  Star Catcher is an Equal Opportunity Employer; employment with Star Catcher is governed on the basis of merit, competence and qualifications and will not be influenced in any manner by race, color, religion, gender, national origin/ethnicity, veteran status, disability status, age, sexual orientation, gender identity, marital status, mental or physical disability or any other legally protected status. All offers of employment at Star Catcher are contingent upon results of a thorough background check and your ability to provide proof of eligibility to work in the US. To conform to U.S. Government space technology export regulations, including the International Traffic in Arms Regulations (ITAR) you must be a U.S. citizen, lawful permanent resident of the U.S., protected individual as defined by 8 U.S.C. 1324b(a)(3), or eligible to obtain the required authorizations from the U.S. Department of State. 
 </div>
 </div><h3>About the Company</h3><div>
 <div>
 Star Catcher Industries, Inc. (Star Catcher) was founded in 2024 by multiple time successful space entrepreneurs Andrew Rush and Michael Snyder and experienced VC and operator Bryan Lyandvert to eliminate power constraints on satellites and other spacecraft by constructing the Star Catcher Network: the world’s first space-based energy grid. Star Catcher’s proprietary power beaming technology will beam power to other satellites in space as a service, enabling client spacecraft to use their existing solar arrays to receive more power, more consistent power, and higher concentrations of power in order to increase capability and uptime as well as reduce upfront spending and overall mission cost. 
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Spacecraft ADCS Engineer

Design, develop, test ADCS; implement GNC algorithms; project management; aerospace software experience; C/C++; Python/MATLAB; ADCS design and simulation.

Python Test Software Developer Jobs in Yulee, FL, US | HiringCafe: every job on earth

Python Test Software Developer Jobs in Yulee, FL, US

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