Senior Software Engineer (Java Or Python) - VP

Citi; Belfast City District; Hybrid; GBP 70,000 - 95,000; Full time

Benefits offered by this job

Annual leave

Performance bonus

Private medical care

Life insurance

Employee assistance program

Pension plan

Parental leave

Employee discounts

Learning resources

Job summary

Citi is recruiting a Senior Software Engineer (Java or Python) to help shape tech for global finance. You will work on full‑stack development, leveraging Spring Boot, Flask/FastAPI, and modern JS frameworks. Expect cloud-native design, Gen‑AI concepts, and involvement across architecture, infrastructure, and AI integration.

Hybrid work with mentorship and growth opportunities. Join Citi Tech to work on impactful systems used across 180+ countries, with a focus on continuous learning and

Qualifications

• Experience in full-stack application development with strong expertise in Java or Python.
• Deep experience with backend frameworks such as Spring Boot / Spring Core and Flask / FastAPI.
• Solid frontend experience with modern JavaScript frameworks (React, Angular, or Vue).
• Experience designing and delivering scalable, cloud-native applications.
• Exposure to Gen‑AI concepts including large language models, transformer-based systems, prompt engineering, and vector search.

Responsibilities

• Partner with multiple management teams to integrate functions and define system enhancements for new products and processes.
• Resolve high-impact problems by evaluating complex business and system processes against standards.
• Provide expertise in applications programming and ensure design aligns with architecture blueprint.
• Develop standards for coding, testing, debugging, and implementation.
• Gain comprehensive knowledge of how business areas such as architecture and infrastructure integrate to meet goals.
• Provide in-depth analysis to define issues and develop innovative solutions.
• Coach mid-level developers and analysts, allocating work as needed.
• Assess risk in business decisions, ensuring compliance with laws, policies and safeguarding Citi.

Skills

Full-stack development

Java

Python

Spring Boot

Flask

FastAPI

React

Angular

Vue

Cloud-native

Gen‑AI concepts

Tools

LangChain

LangGraph

MLflow

n8n

Job description

Senior Software Engineer (Java Or Python)

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

Role Overview / What will you do:

• Partner with multiple management teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and process improvements
• Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards
• Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint
• Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
• Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
• Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
• Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary
• 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

Additional Job Description

• Experience in full‑stack application development with strong expertise in Java or Python
• Deep experience with backend frameworks such as Spring Boot / Spring Core and Flask / FastAPI
• Solid frontend experience with modern JavaScript frameworks (React, Angular, or Vue)
• Experience designing and delivering scalable, cloud‑native applications
• Exposure to Gen‑AI concepts including:
  • Large Language Models (LLMs) and transformer‑based systems
  • Prompt engineering and basic agent workflows
  • Vector search and retrieval concepts
• Familiarity with Gen‑AI frameworks/tools such as LangChain, LangGraph, MLflow, or workflow orchestration tools (e.g., n8n) (hands‑on experience preferred, but deep ML expertise not mandatory)
• Experience integrating Gen‑AI APIs (OpenAI, Gemini, Claude, etc.) into production applications
• Familiarity with at least one major cloud provider (AWS, GCP, or Azure)

What we’ll provide you

By joining Citi, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A 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

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.