GenAI Senior Full-Stack Software Engineer, Citi

Citi

Location:
United Kingdom, Belfast

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

Not provided

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Job Description:

The GenAI Senior Full-Stack Software Engineer will play a key role in building high-impact products within the Codified Controls team, which is revolutionizing how policies, standards, and controls are managed through a company-wide 'everything-as-code' initiative. The role involves working extensively with Generative AI technologies like GPT-4 and Gemini, integrating their capabilities into systems through advanced prompt engineering and API integration.

Job Responsibility:

Design, develop, and test software applications that leverage Large Language Models and AI capabilities
Collaborate closely with team members to ensure software is developed and delivered on time and within budget
Set standards for excellence: high-quality software and exceptional user experiences
Stay current with the latest software development trends and AI/ML technologies
Ensure software platforms comply with Citi's security and Software Development Life Cycle processes
Work with diverse teams across the organization to drive adoption of everything-as-code and codified controls mindset
Support and drive cultural change by encouraging critical thinking about controls and processes and fostering a culture of continuous improvement
Integrate and optimize Large Language Model capabilities in production applications
Develop robust prompt engineering strategies and AI workflow automation

Requirements:

Proven experience as a Full-Stack Software Engineer in product-focused teams
Strong experience delivering production code, preferably in Python, Go, and TypeScript
Experience working in agile software development environments
Demonstrated experience with distributed systems, event-driven architectures, container-based microservices, distributed logging, SQL and NoSQL databases, and DevSecOps practices
Proven ability to identify and solve complex problems effectively
Excellent communication and collaboration skills
Self-motivated with the ability to work effectively in both team and remote environments
Growth mindset with willingness to learn and adapt in a fast-paced environment

Nice to have:

Previous experience working with OpenAI, Anthropic, Google AI, or similar LLM providers
Experience integrating AI/ML models or APIs into production applications
Familiarity with Large Language Model APIs, prompt engineering, and AI workflow design
Understanding of AI safety, responsible AI practices, and model performance optimization
Knowledge of vector databases and semantic search technologies
Experience with AI model fine-tuning or custom model deployment
Background in natural language processing or machine learning
Experience with AI governance and compliance frameworks

What we offer:

27 days annual leave (plus bank holidays)
Discretional annual performance related bonus
Private Medical Care & Life Insurance
Employee Assistance Program
Pension Plan
Paid Parental Leave
Special discounts for employees, family, and friends
Access to an array of learning and development resources

Additional Information:

Job Posted:
November 07, 2025

Employment Type:

Fulltime

Work Type:

Hybrid work

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GenAI Senior Full-Stack Software Engineer