• Take ownership of core product components from concept to deployment. • Collaborate with the Product team to design scalable and maintainable architectures. • Participate in (and lead) code reviews and ensure best practices across the team. • Mentor junior and mid-level developers, providing guidance and fostering growth. • Contribute to hiring and onboarding new team members. • Maintain high code quality and application performance in a fast-paced, high-traffic environment. • Set up and improve CI/CD pipelines and development workflows. • Monitor, debug, and improve the stability and scalability of the system. • Help shape the engineering culture as the team grows.

Senior Software Engineer, Full Stack Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers, doers and disruptors, who solve real problems and meet real customer needs. We are seeking Full Stack Software Engineers who are passionate about marrying data with emerging technologies. As a Capital One Software Engineer, you'll have the opportunity to be on the forefront of driving a major transformation within Capital One. What You'll Do: - Collaborate with and across Agile teams to design, develop, test, implement, and support technical solutions in full-stack development tools and technologies - Share your passion for staying on top of tech trends, experimenting with and learning new technologies, participating in internal & external technology communities, mentoring other members of the engineering community - Collaborate with digital product managers, and deliver robust cloud-based solutions that drive powerful experiences to help millions of Americans achieve financial empowerment - Utilize programming languages like JavaScript, Java, HTML/CSS, TypeScript, SQL, Python, and Go, Open Source RDBMS and NoSQL databases, Container Orchestration services including Docker and Kubernetes, and a variety of AWS tools and services Basic Qualifications: - Bachelor's Degree - At least 3 years of experience in software engineering (Internship experience does not apply) Preferred Qualifications: - 5+ years of experience in at least one of the following: JavaScript, Java, TypeScript, SQL, Python, or Go - 1+ years of experience with AWS, GCP, Microsoft Azure, or another cloud service - 3+ years of experience in open source frameworks - 2+ years of experience in Agile practices - Experience leveraging interactive AI tooling to accelerate productivity, utilizing capabilities beyond basic code completion At this time, Capital One will not sponsor a new applicant for employment authorization, or offer any immigration related support for this position (i.e. H1B, F-1 OPT, F-1 STEM OPT, F-1 CPT, J-1, TN, E-2, E-3, L-1 and O-1, or any EADs or other forms of work authorization that require immigration support from an employer). The minimum and maximum full-time annual salaries for this role are listed below, by location. Please note that this salary information is solely for candidates hired to perform work within one of these locations, and refers to the amount Capital One is willing to pay at the time of this posting. Salaries for part-time roles will be prorated based upon the agreed upon number of hours to be regularly worked. Remote (Regardless of Location): $147,100 - $167,900 for Senior Software Engineer McLean, VA: $161,800 - $184,600 for Senior Software Engineer Candidates hired to work in other locations will be subject to the pay range associated with that location, and the actual annualized salary amount offered to any candidate at the time of hire will be reflected solely in the candidate's offer letter. This role is also eligible to earn performance based incentive compensation, which may include cash bonus(es) and/or long term incentives (LTI). Incentives could be discretionary or non discretionary depending on the plan. Capital One offers a comprehensive, competitive, and inclusive set of health, financial and other benefits that support your total well-being. Learn more at the Capital One Careers website . Eligibility varies based on full or part-time status, exempt or non-exempt status, and management level. This role is expected to accept applications for a minimum of 5 business days. No agencies please. Capital One is an equal opportunity employer (EOE, including disability/vet) committed to non-discrimination in compliance with applicable federal, state, and local laws. Capital One promotes a drug-free workplace. Capital One will consider for employment qualified applicants with a criminal history in a manner consistent with the requirements of applicable laws regarding criminal background inquiries, including, to the extent applicable, Article 23-A of the New York Correction Law; San Francisco, California Police Code Article 49, Sections 4901-4920; New York City's Fair Chance Act; Philadelphia's Fair Criminal Records Screening Act; and other applicable federal, state, and local laws and regulations regarding criminal background inquiries. If you have visited our website in search of information on employment opportunities or to apply for a position, and you require an accommodation, please contact Capital One Recruiting at 1-800-304-9102 or via email at RecruitingAccommodation@capitalone.com . All information you provide will be kept confidential and will be used only to the extent required to provide needed reasonable accommodations. For technical support or questions about Capital One's recruiting process, please send an email to Careers@capitalone.com Capital One does not provide, endorse nor guarantee and is not liable for third-party products, services, educational tools or other information available through this site. Capital One Financial is made up of several different entities. Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC).

• Develop backend services and APIs using C#/.NET Core. • Build secure, responsive, and maintainable frontend applications using React. • Implement 3D visualization and data-driven UI experiences using Three.js. • Design and optimize SQL Server schemas, indexing strategies, and aggregation pipelines. • Implement Redis-based caching and signaling systems. • Build RAG pipelines, vector search integrations, and retrieval-optimized AI services. • Develop agentic AI workflows using LangChain, AutoGen, DSPy, or similar frameworks. • Apply Secure SDLC practices across backend, frontend, infrastructure, and CI/CD workflows. • Troubleshoot distributed-system performance and scalability issues. • Deploy and maintain applications using Docker, Kubernetes, and AWS services. • Collaborate with product, security, and data teams to define engineering standards and deliver high-quality systems.

• Develop and deploy mobile-web client applications according to study specifications • Integrate clinical research data acquisition applications with backend, project-specific databases • Participate as a software development contributor in cross-functional project teams, working alongside Project Managers, Clinical Study Design, Software QA, and Data Delivery colleagues • Contribute to specification development, planning, and deployment scheduling processes • Deliver software development tasks in a timely manner across the full development lifecycle • Update and improve standard libraries and contribute to semi-custom implementations for specific clients • Adhere to Clario’s Standard Operating Procedures and regulated development practices • Manage the development lifecycle of clinical trial data collection applications