GenAI Full-Stack Engineer

Citigroup; Greater London; Hybrid; GBP 62,000 - 102,000; Full time

Benefits offered by this job

Hybrid work up to 2 days

27 days annual leave

Private medical care

Life insurance

Pension plan

Parental leave

Employee discounts

EAP

Job summary

Citi in London is seeking a software engineer to build GenAI powered solutions and contribute to the design and delivery of GenAI platforms. You will shape the technical direction of full‑stack ecosystems across frontend, backend, APIs, cloud services, and platform components, working with technology and business partners to align with priorities.

The role promotes DevSecOps, engineering best practices, and a culture of continuous improvement, while mentoring team members and advancing

Job description

Salary: £62,000 - 102,000 per year

Requirements:

• We need 3-5 years of relevant software development experience building and shipping high-quality software.
• We need strong proficiency in Python and deep understanding of either frontend development with TypeScript and React or backend development with Go.
• We need proven experience working on AI-enabled or Generative AI solutions, preferably in an enterprise setting.
• We need hands‑on experience with Kubernetes, containers, microservices, and event‑driven architectures.
• We need a solid understanding of distributed systems, resiliency patterns, scalability, and performance engineering.
• We need knowledge of SQL and NoSQL databases, as well as API design and integration patterns.
• We need strong communication and collaboration skills to work effectively across teams.
• We need a Bachelors degree in Computer Science, Engineering, or a related field, or equivalent practical experience.
• Desirable experience includes financial services or other regulated industries.
• Desirable experience includes contributions to open‑source projects.
• Desirable experience includes MLOps and deployment of machine learning models.

Responsibilities:

• We will build impactful GenAI solutions and contribute to the design and delivery of our new GenAI platforms.
• We will shape the technical direction of our full‑stack ecosystems across frontend, backend, APIs, cloud services, and platform components.
• We will collaborate with technology and business partners to align our application strategy with organisational priorities and deliver key business projects.
• We will promote and apply DevSecOps principles, engineering best practices, and a culture of continuous improvement.
• We will support the adoption of our developer platforms, automation capabilities, and enterprise engineering standards.
• We will mentor and advise other team members, using our judgment and autonomy to drive projects forward.

Technologies:

• AI
• API
• Backend
• Cloud
• DevSecOps
• Frontend
• Support
• Kubernetes
• Machine Learning
• MLOps
• NoSQL
• Python
• React
• SQL
• TypeScript
• microservices
• Fullstack

More:

We are Citi, a global financial leader in London, England, United Kingdom, and this role sits within our Technology, Applications Development team. We are building new GenAI‑powered solutions from the ground up as part of a major transformation, offering the chance to work on high‑impact projects in a collaborative and forward‑thinking environment. We provide a business casual workplace with a hybrid working model of up to 2 days working from home per week, a competitive base salary reviewed annually, and benefits including 27 days annual leave plus bank holidays, a discretionary annual performance‑related bonus, private medical care and life insurance, an Employee Assistance Program, a pension plan, paid parental leave, and special discounts for employees, family, and friends. We are committed to an inclusive workplace where everyone can feel comfortable bringing their whole self to work.

last updated 36 week of 2026