Applications Development Technology Senior Lead

Citibank (Switzerland) AG; Mississauga; Hybrid; CAD 150,000 - 190,000; Full time

Job summary

Citigroup in Mississauga is seeking a senior leader for Applications Development Technology to set the technical direction for enterprise apps, oversee Java/Spring programs, and drive secure, scalable, high-performance delivery. Hybrid work in Mississauga, Canada, with a strong focus on JVM tuning, caching, and infrastructure collaboration.

Qualifications

• 10+ years of experience in Java and enterprise apps.
• Proven expertise in Java, Spring, and JVM internals.
• Experience with caching, data grids (GemFire/Geode) and distributed systems.
• Experience in security engineering and secure coding practices.
• Bachelor’s degree; Master’s preferred.

Responsibilities

• Provide executive oversight on Java and Spring upgrade programs.
• Set standards for JVM performance optimization and observability.
• Govern caching strategy across the enterprise.
• Collaborate with Infrastructure/DevOps on clusters, IaC, and CI/CD.
• Lead security governance and remediation programs.
• Monitor SDLC and ensure on-time delivery.

Skills

Java core concepts

Spring Framework

JVM tuning

Architecture leadership

Education

Bachelor's degree in CS or related

Master’s degree preferred

Tools

GemFire/Apache Geode

Kubernetes

Docker

CI/CD pipelines

SonarQube

Checkmarx

Job description

## Applications Development Technology Senior LeadApply: Hybrid: Mississauga Ontario Canada: Full time: Posted Today: End Date: October 11, 2026 (9 days left to apply): 26998411The **Applications Development Technology Senior Lead** is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology Team. The overall objective of this role is to drive organizational capability, set the technical direction for enterprise applications, and ensure the delivery of scalable, secure, resilient, and high-performance solutions aligned with Citigroup's strategic goals.**Responsibilities:**## Java Platform & Spring Ecosystem* **Provide executive oversight on Java and Spring Framework upgrade programs** — governing migration strategies, compatibility assessments, deprecation roadmaps, regression testing plans, and enterprise-wide rollout* Set standards for **JVM performance optimization**, GC tuning, memory management, and application observability across all teams* Ensure engineering teams stay current with the Java ecosystem evolution and Spring release cycles## Caching & Infrastructure Collaboration* **Govern GemFire/Apache Geode caching strategy** across the enterprise — overseeing cluster topology design, region configuration standards, WAN replication, eviction policies, persistence strategies, and high-availability configuration* **Own the strategic relationship with Infrastructure and DevOps teams**, providing executive direction on the planning, setup, and lifecycle management of:* Application and database **clusters and node topology*** **Caching layers and distributed in-memory data grids** (GemFire/Geode)* **Database environments** — relational, distributed, and NoSQL* **Containerized application environments** (Kubernetes, Docker)* **CI/CD pipelines** and release engineering infrastructure* Approve and guide **Infrastructure-as-Code (IaC)** strategies and platform automation standards## Security & Code Vulnerability Management* **Own the group's security engineering posture** — define and enforces secure coding standards, vulnerability management processes, and compliance controls across all development teams* Govern **code vulnerability assessment and remediation programs**, including SAST/DAST tooling integration (SonarQube, Checkmarx) and mandatory security gates in CI/CD pipelines* Liaise with Cybersecurity, Risk, and Compliance teams to address audit findings and implement security improvement plans## Delivery & Operational Excellence* Monitor and govern all phases of the software development lifecycle — analysis, design, construction, testing, and implementation — ensuring consistent quality and on-time delivery across all programs* Ensure essential procedures are followed and **define operating standards and processes** for the entire group* 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, and escalating, managing, and reporting control issues with transparency**Required Qualifications:*** **10+ years of relevant experience**, in **Java core concepts** (OOP, Collections, Concurrency, JVM internals) with ability to guide technical teams at depth* Strong working knowledge of **Spring Framework** (Spring Boot, Spring MVC, Spring Data, Spring Security, Spring Cloud)* Experience with **database technologies** (SQL, ORM frameworks) and API design principles (RESTful, GraphQL, API Gateway patterns) **Education:*** Bachelor’s degree/University degree or equivalent experience* Master’s degree preferred This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.