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Added 6 days ago
KG
Java Application Developer
K&K Global Talent Solutions INC.
Toronto, ON
- Full-time
We are seeking an experienced Application Developer with strong expertise in Java Backend Development, Quarkus, XML/XSLT Processing, and Enterprise Integration. The ideal candidate will…
Added 6 days ago
T
Quality Engineer I
TD
Toronto, ON
- Full-time
Build automation using Selenium, Karate, REST Assured, Appium, Cucumber, and Java.
Added 6 days ago
C
Senior Java Back - End Developer - Assistant Vice President
Citi
Mississauga, ON
- Full-time
We’re seeking a seasoned Senior Java Back - End Developer with 5+ years of experience to lead end-to-end technical design and delivery of mission‑critical systems. You will own architecture…
Added 6 days ago
R
Principal AI Engineer, AI DLC Platform
RBC
Toronto, ON
- Full-time
Software engineering depth: proficiency in Python, Java or C++ with strong engineering fundamentals.
Added 6 days ago
SL
Principal AI Engineer
Sun Life
Toronto, ON · Waterloo, ON · Sun Life Waterloo King
- Full-time
Deep architectural expertise across multiple languages (Python, Java) and AWS services, with hands-on ability to design scalable solutions
Added 6 days ago
KR
Spring Boot Technical Lead
KTek Resourcing
Montreal, QC
- Contract
Design, develop, and maintain scalable applications using Java, JavaScript, and Spring Boot frameworks.
Added 6 days ago
C
Consultant, Back End Developer
CIBC
Toronto, ON
- Full-time
…of system integration and patterns. As a Consultant Back End Developer, you first need to be an expert programmer. You will lead development and implementation of solutions to main Digital…
Added 6 days ago
R
Spécialiste en automatisation manufacturière / Manufacturing Automation Specialist
RTX
Longueuil, QC
- Full-time
Maîtrise des langages de programmation (C#, Java, Python);
Added 6 days ago
Rust Developer
Charger Logistics Inc
Brampton, ON
We’re looking for a hands-on Rust Developer to build fast, reliable, memory-safe backend systems. You’ll design and write production Rust services, improve performance, and work closely…
Added 6 days ago
SI
Java Full Stack Developer
Spait Infotech
Canada
- Full-time
Build backend services and RESTful APIs using Java and Spring Boot.
Added 6 days ago
A
RQ11600 - Senior Software Developer
Amyantek
Toronto, ON · Greater Toronto Area, Canada
- Contract
Job Title: RQ11600 - Senior Software Developer - Full Stack - 3 Resources
Added 6 days ago
RC
Senior QA Engineer
Rexall Care Network
Mississauga, ON
- Full-time
Proficiency in at least one programming or scripting language (e.g., Python, Java, JavaScript / TypeScript) is sufficient to design, write, and maintain production-grade automation code.
Added 6 days ago
KI
Co-op/Intern Visual Designer
Kinaxis Inc.
Ottawa, ON
- Internship
Understanding of Web UI standards, responsive design frameworks (basic HTML, CSS, and Java script knowledge is a plus), environmental graphics, and/or production process
Added 6 days ago
T
Senior IBM ACE / IIB Integration Developer (.NET & PowerShell)
ThoughtStorm
Toronto, ON
- Contract
We are seeking a Senior Software Developer to support the sustainment and enhancement of critical police systems for the Public sector client.
Added 6 days ago
E
Quality Engineer - Banking Mobile (iOS/Android) & Automation Testing
Experis
Toronto, ON
- Contract
Solid understanding of at least one programming language (e.g., JavaScript/TypeScript, Python, Java, or C#).
Added 6 days ago
IG
Peoplesoft Developer
Insight Global
London, ON
- $40 to $42 CAD / hour
- Contract
Insight Global is seeking a PeopleSoft Developer to support a higher education client within their Application Services team. This role is 5 days onsite in London, Ontario and will support…
Added 6 days ago
IG
Peoplesoft Developer
Insight Global
London, ON
- Contract
Insight Global is seeking a PeopleSoft Developer to support a higher education client within their Application Services team. This role is 5 days onsite in London, Ontario and will support…
Added 6 days ago
CL
Rust Developer
Charger Logistics Inc.
Brampton, ON
- Full-time
We're looking for a hands-on Rust Developer to build fast, reliable, memory-safe backend systems. You'll design and write production Rust services, improve performance, and work closely…
Added 6 days ago
M
Software Engineer II (Backend Java)
Mastercard
Vancouver, BC
- Full-time
Software Engineer II (Backend Java)Who is Mastercard?
Added 6 days ago
RD
Business System Analyst
Randstad Digital
Toronto, ON
- Contract
…supporting our deposit products (GICs and Savings) within a Java-based UI environment. This is a perfect fit for an analyst who understands the "language of banking" and isn't afraid to get…
Added 6 days ago
M
RQ11721 - Software Developer - Intermediate
Maarut
Toronto, ON
- Contract
Experience developing and maintaining Java application
Added 6 days ago
M
RQ11719 - Software Developer - Senior
Maarut
Toronto, ON
- Contract
Design, develop, configure, test, and maintain Java
Added 6 days ago
A
Développeur(se) Java sénior
Astek
Montreal, QC
- Full-time
Développeur(se) Java sénior - Systèmes de risque de marché
Added 6 days ago
Software Development Engineer, Early Career - 2027 (CAN)
Amazon
Vancouver, BC
- Experience with at least one general-purpose programming language such as Java, Python, C++, C#, Go, Rust, or TypeScript
Added 6 days ago
NI
Full-stack Developer (React + Java)
Nityo Infotech
Mississauga, ON
- Full-time
Candidate must have strong knowledge on java, spring boot, reactive spring, graphQL.

Citi

Senior Java Back - End Developer - Assistant Vice President

Mississauga, ON, Canada

$94,300.00 - $141,500.00 · Full-time

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Job details

Pay: $94,300.00 - $141,500.00
Job type: Full-time
Apply by: Dec 28, 2026
Posting language: English
Posted: Oct 19, 2026

Original job description

Role Summary

We’re seeking a seasoned Senior Java Back - End Developer with 5+ years of experience to lead end-to-end technical design and delivery of mission‑critical systems. You will own architecture decisions, drive engineering excellence, mentor senior engineers, and partner with product, security, and platform teams to build scalable, reliable, and secure distributed systems.

Key Responsibilities:

Architecture & Design
- Define and evolve system architecture for cloud-native, microservices/event-driven platforms (scalability, resilience, security, cost).
- Create high-level and low-level designs, integration patterns, API contracts, and reference implementations.
- Lead design reviews; ensure alignment with domain-driven design (DDD), 12‑factor principles, and organization standards.
Engineering Leadership
- Lead squads through full SDLC - from discovery and PoCs to production and SRE handoff.
- Establish coding standards, code review practices, and secure-by-default patterns.
- Mentor and coach senior engineers; support career growth and succession of technical leaders.
Hands-on Development
- Build core services using Java (17+), Spring Boot, REST/GraphQL, and message/event streaming.
- Optimize for performance, concurrency, observability, and operational excellence (SLOs, error budgets).
- Drive quality with unit/integration/contract testing, test data strategy, and automated quality gates.
Cloud & Platform
- Design for AWS/Azure/GCP, container orchestration (Kubernetes), service mesh, and CI/CD.
- Implement infrastructure-as-code (IaC) patterns and secrets management.
- Partner with SRE/Platform teams on monitoring, alerting, logging, tracing, and cost governance.
Data & Integration
- Architect integrations across SQL/NoSQL, caching (Redis), and event streams (Kafka/Pulsar).
- Define data contracts, schema evolution strategies, and idempotent/eventual consistency patterns.
Security & Compliance
- Embed AppSec best practices, OWASP controls, secure API/auth (OAuth2/OIDC), and zero trust patterns.
- Ensure compliance with regulatory and audit requirements where applicable.
Stakeholder Partnership
- Translate business needs into technical roadmaps and architecture runway.
- Communicate trade-offs and decisions to both technical and non-technical audiences.
GenAI : Knowledge of MCP, A2A, Agentic Architecture

Required Qualifications:

5+ years of progressive experience building enterprise systems, with 5+ years in Java and Spring at scale.
Proven delivery of cloud-native, microservices, and event-driven architectures.
Strong expertise in:
- Java 11/17+, Spring Boot, Spring Cloud
- REST/GraphQL APIs, gRPC (nice-to-have)
- Kafka (or Pulsar), Kubernetes, Docker
- RDBMS (PostgreSQL/MySQL/Oracle) and NoSQL (MongoDB/Cassandra/DynamoDB)
- Caching (Redis), CI/CD (GitHub Actions/Azure DevOps/Jenkins), IaC (Terraform/ARM)
- Observability (OpenTelemetry, Prometheus/Grafana, ELK), feature flags/progressive delivery
Solid grasp of concurrency, performance tuning, resiliency patterns (circuit breakers, retries, bulkheads), and fault-tolerance.
Demonstrated leadership of architectural forums, design reviews, and mentorship.
Strong communication and stakeholder management skills.

Nice-to-Have:

Domain knowledge: Payments, banking, capital markets, insurance, e-commerce, supply chain, or telecom.
Security: Threat modeling, shift-left security, SAST/DAST, secrets rotation, mTLS.
Data: CDC (Debezium), schema registry, exactly-once semantics, streaming ETL.
Platform: Service mesh (Istio/Linkerd), API gateways (Kong/Apigee), Serverless (Lambda/Functions).
Modern patterns: CQRS, event sourcing, Saga orchestration, hexagonal architecture.

Education:

Bachelor’s degree/University degree or equivalent experience

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Job Family Group:

Technology

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Job Family:

Applications Development

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Time Type:

Full time

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Primary Location Full Time Salary Range:

$94,300.00 - $141,500.00

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Most Relevant Skills

Please see the requirements listed above.

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Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

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Automated Processing and AI

We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi.

Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

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This job opening is for an existing job vacancy.

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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.

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More about this job

Responsibilities

Lead the end-to-end technical design and delivery of mission-critical, scalable, and secure distributed systems. Mentor senior engineers while driving engineering excellence and architectural decisions across the full software development lifecycle.

Requirements

Requires 5+ years of progressive experience in enterprise systems with deep expertise in Java and Spring Boot. Proven track record in cloud-native, microservices, and event-driven architectures is essential.

Skills

Java
Spring Boot
Microservices
Cloud-native architecture
Event-driven architecture
Kubernetes
AWS
Azure
GCP
Kafka
REST
GraphQL
CI/CD
Infrastructure-as-code
System design
Mentorship

Visa sponsorship

Not detected in the job text

Keywords

Java
Spring Boot
Microservices
Cloud-native
Event-driven
Kubernetes
AWS
Azure
GCP
Kafka
REST
GraphQL
Terraform
CI/CD
PostgreSQL
NoSQL
Redis
OpenTelemetry
Prometheus
Grafana
Domain-driven design
SDLC
AppSec
OAuth2
Zero trust
Distributed systems
Architecture
Mentorship
Payments
Banking

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