Senior Software Engineer (Java Or Python) - VP

Citibank (Switzerland) AG; Belfast City District; On-site; Confidential; Full time

Benefits offered by this job

27 days annual leave

Discretional annual bonus

Private Medical Care & Life Insurance

Employee Assistance Program

Pension Plan

Parental Leave

Job summary

Citibank (Switzerland) AG in Belfast is seeking a Senior Software Engineer (Java or Python) to co-create and evolve financial software platforms. You will work on full-stack development, applying Spring Boot/Spring Core, Flask/FastAPI, and modern JavaScript frameworks to deliver scalable cloud-native applications.

You will collaborate with cross-functional teams, mentor junior engineers, and ensure robust coding practices while embracing GenAI concepts and cloud services from major providers.

Qualifications

• Strong experience in full-stack application development with Java or Python.
• 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.

Responsibilities

• Partner with management teams to integrate functions and deploy new products.
• Resolve high-impact problems through analysis of complex processes and systems.
• Provide expert guidance on coding, testing, debugging, and implementation.
• Develop knowledge of how architecture and infrastructure align to business goals.
• Perform in-depth analysis and propose innovative solutions.
• Mentor mid-level developers and analysts and allocate work as needed.

Skills

Java

Python

Tools

Spring Boot

Flask

React

Job description

## Senior Software Engineer (Java Or Python) - VPApplylocations: Belfast United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: 26969354**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.**Key Skills and Experience required****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**)This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.**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 resourcesVisit our About Us | Culture, Values & Benefits page to learn more.Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.#LI-AP2