Senior Java and Scala Developer Job at Citi (Mississauga)

Senior Full Stack Java Developer

Citi is looking for a Senior Full Stack Java Developer to join the FX Data Analy...

Location

United Kingdom , London

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

Master’s degree or above (or equivalent education) in a STEM discipline
proven experience in software engineering and development, and a strong understanding of computer systems and how they operate
hands-on experience in Java, Spark, Scala (or Java)
production scale hands-on experience to write data pipelines using Spark or any other distributed real time or batch processing
strong skill set in SQL or databases
strong understanding of messaging technologies like Kafka, Solace, MQ etc.
writing production scale applications to use caching technologies
understanding of data virtualization
production management (L3 support) experience.

Job Responsibility

Engineer data and analytics pipelines using modern, cloud-native technologies and CI/CD workflows, focusing on consolidation, automation, and scalability
collaborate with stakeholders across sales and trading to understand data needs, translate them into impactful data-driven solutions, and deliver these in partnership with technology
develop and integrate functionality to ensure adherence with best-practices in terms of data management, need-to-know (NTK), and data governance
contribute to shaping and executing the overall data strategy for FX in collaboration with the existing team and senior stakeholders
closely work with FX desks in understanding the requirements and translating into simple and efficient design
close interaction with Traders and Quants to understand new requirements for applications across the platform
design, development, testing of new features in the applications
continual improvement of the software development lifecycle and quality of the product
help deliver large scale projects through hands-on development and technical leadership
3rd line support of the production system (dedicated 24h support teams handle 1st or 2nd line)

What we offer

27 days annual leave (plus bank holidays)
a discretional annual performance related bonus
private medical care and 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.

Fulltime

Senior Java Developer

The Fixed Income Data team is experiencing rapid growth, committed to delivering...

Location

Canada , Mississauga

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

3-5 years of demonstrable and relevant experience in software development, with a strong focus on API development and big data solutions
expertise in developing high-performance APIs for large-scale data platforms and distributed systems
extensive hands-on experience with data distribution platforms like Apache Kafka, and various big data storage/querying systems (e.g., Trino, Pinot, Druid, Ignite) for low-latency access via APIs
solid understanding of Java / Scala with a focus on building high-performance, concurrent applications
strong experience with the Spring stack, particularly Spring Boot for building microservices that expose data via APIs
expert-level understanding and demonstrable experience in REST API development for data reporting and consumption
demonstrable experience in writing reusable, testable, and efficient code with proper error and exception handling, especially for fault-tolerant API services
experience with the design and implementation of cloud-native applications and deployment via Kubernetes / OpenShift, specifically for managing API-driven data services
hands-on experience in handling various data structures and optimizing them for API consumption and analytical queries
experience with API Gateway, Circuit Breaker, Spring Security, Discovery Server, and monitoring services (e.g., Prometheus, Grafana) is a plus, particularly in an API-driven data ecosystem

Job Responsibility

design, develop, and implement highly scalable and resilient API services for data access and processing, leveraging big data platforms
conduct feasibility studies, time and cost estimates for new API-driven data solutions and establish and implement new or revised applications and systems to meet specific business needs or user areas
monitor and control all phases of the development process (analysis, design, construction, testing, and deployment) for API-driven data applications, providing operational support
utilize in-depth specialty knowledge of API development for big data environments and analytics to analyze complex problems/issues, evaluate business processes, system processes, and industry standards, and make evaluative judgments
ensure essential procedures are followed and help define operating standards and processes for API-driven data infrastructure
serve as an advisor or coach to new or junior analysts on API development and big data access best practices
operate with a limited level of direct supervision, exercising independence of judgment and autonomy
act as a Subject Matter Expert (SME) to senior stakeholders and/or other team members on data API technologies and their application in finance

What we offer

flexibility to work with a global team across geographies and time zones

Fulltime

Big Data Application Development Senior Programmer

The Applications Development Senior Programmer Analyst is an intermediate level ...

Location

India , Chennai

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

8-10 years of Development experience in big data space
Core Java
Full Stack developer
Big Data Frameworks
Hadoop
Scala
Hive
Impala
Kafka
Elastic

Job Responsibility

Develop real time and batch data transformation processes using wide range of technologies using Hadoop, Spark Stream, Spark SQL, Python, Hive etc
Ability to translate architecture and low-level requirements to design and code using Big-data tools and processes
Utilize in-depth specialty knowledge of applications development to analyze complex problems/issues, provide evaluation of business process, system process, and industry standards, and make evaluative judgement
Conduct tasks related to feasibility studies, time and cost estimates, IT planning, risk technology, applications development, model development, and establish and implement new or revised applications systems and programs to meet specific business needs or user areas
Monitor and control all phases of development process and analysis, design, construction, testing, and implementation as well as provide user and operational support on applications to business users
Critically evaluate the current processing and recommend process efficiencies/enhancements
Work closely with Technology partners to ensure the Business requirements are met by the development team

Fulltime

Applications Development Senior Group Manager

This role will be part of the Risk Data team and is a senior management level po...

Location

United Kingdom , London

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

Strong academic record, ideally with a Bachelor’s or Master’s degree in Computer Science or engineering or related technical discipline
Proven experience in enterprise application development with full stack technologies
Strong Architect and hands on technical experience in implementing large volume real time complex solutions in Big Data Platforms & Public Cloud platforms
Experience in Data architecture, strong Software development fundamentals, data structures, design patterns, object-oriented principles
Experience in design and delivery of multi-tiered applications and high performance server side components
Skills on system performance tuning, high performance, low latency, multithreading and experience with Java server side programming
Preferred experience in Handling high volumes of data and working with In-memory databases and Caching solutions
Experience of building and leading teams, ideally with a global resource profile and demonstrated ability to deliver large projects efficiently and on time
Significant experience in large Financial Services Technology services companies is expected for this position
Hands-on development, architecture and leadership experience in real-time data engineering platforms implementation

Job Responsibility

Lead the efforts in Institutional Data Platform (ICG) that span multiple businesses, products and functions
Delivery of Price Risk related Data initiatives and Capital reporting (GSIB) related deliverables
Establish strong relationships with the global business stakeholders and ensure transparency of project deliveries
Actively identify and manage risks and issues, working with disparate teams to create mitigation plans and follow-through to resolution
Adhere to all key Project Management (PMQC) & Engineering Excellence standards
Ensure timely communications to Senior Technology Management and Business Partners in Front Office, Middle Office & other Operations functions
Drive the design and development of system architecture, work with end-users of the systems, and enhance the quality of deliverables
Ensure staff follows Citi documented policy and procedures as well as maintain desktop procedures and supporting documentation for filings on a current basis and in comprehensive manner
Ensure change is managed with appropriate controls, documentation, and approvals including implementation of new and revised regulatory reporting requirements
Manage and maintain all disaster recovery plans, oversee appropriate testing, and provide permit-to-operate for new applications

What we offer

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

Fulltime

Senior Scala Backend Engineer

To sustain the company's growth, Ledger is looking for new talents. You will sta...

Location

France , Paris

Salary:

Not provided

Ledger

Expiration Date

Until further notice

Requirements

Experienced engineer and continuous learner with 6+ years of relevant engineering experience
2+ years of technical leadership experience, including effective communication of complex concepts and cross-team coordination to ship critical products
Advanced Scala proficiency
expert-level proficiency, and advanced mastery of a second backend language (e.g., Rust, Java, Python, PHP) is a plus
Excellent collaboration and communication skills
Experience collaborating closely with QA, product management, and key stakeholders to develop and deliver on a shared vision
Led development of complex, high-performance interactive browser applications, including architecture, infrastructure, and optimization
Experience with various web architecture patterns (e.g., Microservices, Event-Driven, P2P)
Ability to apply and adapt software engineering best practices to the engineering environment
Experience in the Web3 ecosystem and in a project involving blockchain fundamentals

Job Responsibility

Develop and maintain high-performance, resilient microservices and APIs to power Ledger's products, including integrations with staking, yield, DeFi services, and blockchain explorers
Contribute to the architecture, design, and implementation of scalable solutions, proactively identifying and addressing technical challenges
Ensure software quality through testing, documentation, and performance optimization, including monitoring and alerting systems
Enhance and maintain CI/CD pipelines to secure and streamline deployment workflows
Provide technical leadership and mentorship, collaborating across teams to deliver impactful projects and improve engineering standards
Drive innovation by identifying opportunities for improvement, contributing to a shared knowledge base, and participating in technical outreach
Manage projects effectively, respecting deadlines, priorities, and deliverables

What we offer

Equity: Employees are the foundation of our success, and we award stock options so you can share in that success as we grow
Flexibility: A hybrid work policy
Social: Annual company outing for Ledgerdary Days, plus frequent social events, snacks and drinks
Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage
Well-being: Personal development, coaching & fitness with our dedicated partners
Vacation: Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days
High tech: Access to high performance office equipment and gadgets
Transport: Ledger reimburses part of your preferred means of transportation
Discounts: Employee discount on all our products

Fulltime

Scala Backend Software Engineer, Senior / Lead

To sustain the company's growth, Ledger is looking for new talents. You will sta...

Location

France , Paris

Salary:

Not provided

Ledger

Expiration Date

Until further notice

Requirements

Experienced engineer and continuous learner with 6+ years of relevant engineering experience
2+ years of technical leadership experience, including effective communication of complex concepts and cross-team coordination to ship critical products
Advanced Scala proficiency
expert-level proficiency, and advanced mastery of a second backend language (e.g., Rust, Java, Python, PHP) is a plus
Excellent collaboration and communication skills
Experience collaborating closely with QA, product management, and key stakeholders to develop and deliver on a shared vision
Led development of complex, high-performance interactive browser applications, including architecture, infrastructure, and optimization
Experience with various web architecture patterns (e.g., Microservices, Event-Driven, P2P)
Ability to apply and adapt software engineering best practices to the engineering environment
Experience in the Web3 ecosystem and in a project involving blockchain fundamentals

Job Responsibility

Develop and maintain high-performance, resilient microservices and APIs to power Ledger's products, including integrations with staking, yield, DeFi services, and blockchain explorers
Contribute to the architecture, design, and implementation of scalable solutions, proactively identifying and addressing technical challenges
Ensure software quality through testing, documentation, and performance optimization, including monitoring and alerting systems
Enhance and maintain CI/CD pipelines to secure and streamline deployment workflows
Provide technical leadership and mentorship, collaborating across teams to deliver impactful projects and improve engineering standards
Drive innovation by identifying opportunities for improvement, contributing to a shared knowledge base, and participating in technical outreach
Manage projects effectively, respecting deadlines, priorities, and deliverables.

What we offer

Equity: Employees are the foundation of our success, and we award stock options so you can share in that success as we grow
Flexibility: A hybrid work policy
Social: Annual company outing for Ledgerdary Days, plus frequent social events, snacks and drinks
Medical: Comprehensive health insurance policy offering extensive medical, dental and vision care coverage
Well-being: Personal development, coaching & fitness with our dedicated partners
Vacation: Five weeks of paid leave per year, in addition to national holidays and rest & relaxation (RTT) days
High tech: Access to high performance office equipment and gadgets
Transport: Ledger reimburses part of your preferred means of transportation
Discounts: Employee discount on all our products.

Fulltime

Senior Java/Scala Engineer

Yopeso has been developing a diverse range of software products, from large-scal...

Location

Moldova , Chisinau

Salary:

Not provided

Yopeso

Expiration Date

Until further notice

Requirements

5+ years of experience in backend development with Java (11/17) or Scala
Solid experience with Spring Boot or functional backend frameworks
Hands-on experience with AWS (EC2, S3, RDS, Lambda, CloudWatch, etc.)
Experience with PostgreSQL and strong SQL knowledge
Familiarity with Kafka (producers/consumers, topic management)
Basic experience or willingness to learn Terraform (Infrastructure as Code)
Readiness to take part in an on-call rotation
Good communication and teamwork skills in English

Job Responsibility

Design, develop, and maintain backend microservices in Scala and Java (Spring Boot)
Collaborate on system architecture and scalable service design in AWS
Work with PostgreSQL databases and integrate asynchronous data flows using Kafka
Automate cloud infrastructure using Terraform and CI/CD pipelines
Participate in on-call rotations, ensuring production reliability and uptime
Write maintainable, testable, and well-documented code following best practices
Collaborate with DevOps, Data, and Frontend teams to deliver end-to-end functionality

What we offer

Competitive remuneration
Remote work
Sports/leisure benefit
20 sick leave days paid at 100%
32 calendar days of vacation
Team events, online, at the office or outside
Professional development plan with guidance and mentorship
Training and development opportunities with allocated budget
Professional Certifications
Optional medical insurance

Fulltime

Big Data Lead Developer (Hadoop/Java/Spark/Scala/Python)

The Applications Development Technology Lead Analyst is a senior level position ...

Location

India , Chennai

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

8-10 years of relevant experience in Big Data Development
Sr. Java resource with experience in Java/J2EE, Hadoop, Scala, Hive, Impala, Kafka and Elastic
Good knowledge of design patterns and providing solutions to complex design issues, identification and resolution of code issues
Hands-On Experience in managing application development using Spark(Scala, Python or Java), SQL, Linux Based Hadoop Ecosystem (HDFS, Impala, Hive, HBase, etc.)
Experience as senior level in an Applications Development role
Proven Solution Delivery skills
Basic knowledge of finance industry practices and standards
Excellent analytical and process-based skills, i.e. process flow diagrams, business modelling, and functional design
Bachelor’s degree/University degree or equivalent experience

Job Responsibility

Manage one or more Applications in an effort to accomplish established goals as well as conduct personnel duties for team like hiring and training
Design and Develop real time and batch data transformation processes using wide range of technologies using Hadoop, Spark Stream, Spark SQL, Python, Hive etc.
Design and Develop programs to build functionalities, in the next generation Big-data platform which is also authorize data redistributor
Ability to translate architecture and low-level requirements to design and code using Big-data tools and processes
Utilize in-depth specialty knowledge of applications development to analyze complex problems/issues, provide evaluation of business process, system process, and industry standards, and make evaluative judgement
Conduct tasks related to feasibility studies, time and cost estimates, IT planning, risk technology, applications development, model development, and establish and implement new or revised applications systems and programs to meet specific business needs or user areas
Monitor and control all phases of development process and analysis, design, construction, testing, and implementation as well as provide user and operational support on applications to business users
Consult with users/clients and other technology groups on issues, recommend advanced programming solutions, and install and assist customer exposure systems
Review and analyze proposed technical solutions for projects
Impact the Applications Development area through monitoring delivery of end results, participate in budget management, and handling day-to-day staff management issues, including resource management and allocation of work within the team/project

What we offer

Best-in-class benefits
Global Benefits
Equal opportunity and affirmative action employer

Fulltime

Senior Java and Scala Developer

Citi

Location:
Canada , Mississauga

Category:
IT - Software Development

Contract Type:
Employment contract

Salary:

Job Description:

Job Responsibility:

Requirements:

Nice to have:

Additional Information:

Job Posted:
November 22, 2025

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