The Full Stack Engineer (AI & Agentic AI Systems) is a strategic professional who will play a pivotal role in architecting and delivering next‑generation intelligent applications that blend advanced software engineering, autonomous agents, and robust end‑to‑end engineering. In this role, you will work across the entire technology stack— REACT based front ends, designing scalable backend services (JAVA/Python), intuitive user experiences, and AI‑driven workflows that reason, plan, and act with minimal human intervention. You’ll collaborate with cross‑functional teams to transform complex business challenges into innovative, production‑ready AI systems that push the boundaries of automation, intelligence, and modern software engineering.

Key Responsibilities:

• Design and deliver end‑to‑end solutions spanning architecture, system design, low‑level design, and high‑quality coding across modern full‑stack environments.
• Build responsive, modular UI applications using React, integrating complex AI-driven workflows and real‑time interactions.
• Develop scalable, high‑performance backend services in Java / Python, implementing resilient APIs, event‑driven patterns, and microservices architectures.
• Strong expertise in SQL (Oracle, PostgreSQL), no SQL DB like MangoDB, PYTHON, JAVA, APIs, Authentication & Authorization like OAuth and others, Encryption
• Engineer AI‑powered features leveraging Google Gemini LLM, Vertex AI, ADK, vector databases (A2A), RAG pipelines, MCP, context engineering, and advanced prompt engineering techniques.
• Implement secure, well‑structured REST and GraphQL APIs, ensuring reliability, versioning discipline, and clean integration patterns across platforms.
• Optimize system performance and scalability, applying profiling, load‑testing insights, caching strategies, and distributed system tuning.
• Drive robust CI/CD practices, integrating automated testing, code quality gates, containerization, and cloud‑native deployment pipelines.
• Partner with QE to build and maintain automated test suites (UI, API, integration, and performance), improving release quality and reducing regression risk.
• Identify, diagnose, and remediate performance bottlenecks, penetration testing vulnerabilities, and production issues with precision and root‑cause clarity.
• Collaborate cross‑functionally with AI scientists, architects, and product teams to translate business challenges into production‑ready, intelligent agentic systems.

Other Responsibilities:

• Accountable for executing and driving mid-size feature application design and development efforts to completion, serving as a development lead on medium-scale projects and supporting the execution of larger efforts.
• Proficient at operating with considerable autonomy and discretion as you will significantly influence the way an application is designed and developed by providing subject specific expertise and an advanced level of understanding of application programming principles.
• Sought after due to ability to analyze and troubleshoot coding, application performance and design challenges.
• Capable of research in root cause of development and performance concerns as well as the resolution of defects.
• Have a deep understanding of the technical requirements for the solutions being built.
• Understand engineering needs including those required to build, maintain, and operate the system through all phases of its life.
• Proficient in information modeling, data structures and algorithms.
• Understand maintenance characteristics, runtime properties and dependencies that exist in support of your system’s software. These dependencies will include but not limited to: hardware, platform, operating system, performance and load requirements, as well as contingencies with upstream and downstream systems.
• Demonstrate an advanced understanding of supported main system flows and possess a comprehensive understanding of how the system and others (i.e. architecture or infrastructure) collectively integrate to contribute towards achieving business objectives. Using this expertise, assist with the development of standards for coding, testing, debugging and implementation. This will ensure application design adheres to the overall architecture blueprint.
• Participate in design discussions as a Development Lead and as such will play the part of a key decision maker in driving design decisions. This is evidenced by your knowledge of the application code details and your experience with the technology and teams engaged.
• Work with limited guidance, seeking guidance only as needed as the development and delivery strategy is defined; the design is not.
• Exhibit the ability to turn complex application design into a well written application.
• Partner with industry vendors that provide technology or user experience design components that support our Digital architecture and work with vendors on our implementation plans and roadmaps identifying partnership opportunities to increase our development velocity and our learnings.
• Participates in the full development life cycle, identify dependencies between agile and waterfall delivery, working within broadly defined parameters, including test plan execution and software quality needs
• Directly impact the business by influencing strategic functional decisions through advice, counsel or provided services. This will require persuading and influencing others through strong and comprehensive communication and diplomacy skills.
• Communicate progress, anticipate bottlenecks, provide escalation management, identify, assess, track and mitigate issues/risks at multiple levels.
• Recognize discordant views and take part in constructive dialog to resolve them.
• Work across teams to optimize processes.
• Regularly review metrics and proactively seek out new and improved mechanisms for visibility ensuring your program stays aligned with organization objectives.
• Continuously assess development processes, test plans, and operations.
• Work with teams to improve concurrent project delivery.
• Streamline and / or eliminate excess process in any area of architecture, build, delivery, production operations environment, or business area where the same efforts (or issues) are repeated year-over-year.
• Share knowledge with the team in various forums (brown bags, engineering forums etc.) and demonstrate a higher level of knowledge through industry certifications
• Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.

Qualifications:

• 8+ years in a product development/product management environment
• Strong analytical and quantitative skills; Data driven and results-oriented
• Experience delivering with an agile methodology
• Experience in affecting large culture change
• Experience leading infrastructure programs
• Skilled at working with third party service providers
• Excellent written and oral communication skills

Education:

• Bachelor’s/University degree or equivalent experience

Job Family Group:

Technology

Job Family:

Digital Software Engineering:

Time Type:

Full time

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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 Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.