Lead Backend Developer Job at Citi (Mississauga)

Lead Backend Developer

Lead a 5-member Hungarian team on exciting, high-impact projects. Act as a centr...

Location

Hungary , Budapest

Salary:

Not provided

Randstad

Expiration Date

July 13, 2026

Requirements

Strong proficiency in Node.js and TypeScript
Hands-on experience with GraphQL and MongoDB
Full-stack approach
previous Frontend experience (approx. 3 years) is a huge plus
Confident English for professional discussions with foreign colleagues
Experience with React and Azure (DevOps support is provided)

Job Responsibility

Lead a 5-member Hungarian team on exciting, high-impact projects
Act as a central technical point connecting multiple systems and interfaces
Collaborate daily with local developers and international business stakeholders
Focus: 95% Backend development, 5% Frontend
Environment: Azure-based infrastructure

What we offer

Remote work option
Personal development: continuous training and development possibilities
International environment
Competitive salary

Fulltime

Lead Backend Developer

Senior technology leader with responsibility for designing, building, and delive...

Location

Canada , Mississauga, Toronto

Salary:

120800.00 - 170800.00 USD / Year

Citi

Expiration Date

Until further notice

Requirements

Java or Python (5+ years)
Object‑Oriented and Functional Programming
RESTful APIs, OpenAPI / Swagger
Java/J2EE application development
Big‑data ecosystems: Spark, Flink, Kafka
Data lakes, batch and streaming pipelines
Data quality, governance, and controls
Microservices architecture and design patterns
Containers and orchestration: Docker, Kubernetes, OpenShift
CI/CD and release automation

Job Responsibility

Lead the design and development of scalable, high‑performance data ingestion solutions for enterprise data lakes using Apache Spark, Hadoop, and related big‑data technologies
Architect and implement Apache Airflow clusters to orchestrate enterprise data pipelines (DAGs)
Design and deliver BI and analytics reporting solutions, including automation of reporting and release processes
Build and maintain data quality, data governance, and control frameworks
Develop engineering tools and best practices to improve developer productivity, code quality, and operational readiness
Design solutions and frameworks to enhance risk management, controls, and compliance
Provide hands‑on technical leadership and ensure solutions align with enterprise architecture and firmwide standards
Partner with architecture, infrastructure, and business teams to deliver integrated solutions aligned to business objectives
Perform complex system analysis and lead problem‑solving using sound engineering judgment
Mentor and coach mid‑level engineers

Fulltime

Lead Backend Developer

Location

India

Salary:

Not provided

Lingaro

Expiration Date

Until further notice

Requirements

Minimum of 6 years of experience in Python backend development
Independence in: Python
Azure Function
Java/Spring
PostgreSQL
FastApi

Job Responsibility

Design, develop, and maintain scalable backend applications and services
Optimize system performance, reliability, and scalability
Collaborate with front-end developers, project managers, and cross-functional teams to deliver high-quality applications
Ensure application security, compliance, and adherence to best practices
Design and implement efficient data storage solutions, including relational and NoSQL databases
Work closely with frontend and UX teams to deliver seamless end-to-end user experiences
Mentor, support, and train junior backend developers
Stay up to date with modern backend technologies, frameworks, and industry trends
Implement and maintain DevOps pipelines and CI/CD practices
Uphold coding standards, perform code reviews, and promote best engineering practices

What we offer

Stable employment
“Office as an option” model
Flexibility regarding working hours and your preferred form of contract
Comprehensive online onboarding program with a “Buddy” from day 1
Cooperation with top-tier engineers and experts
Unlimited access to the Udemy learning platform from day 1
Certificate training programs
Upskilling support
Internal Gallup Certified Strengths Coach to support your growth
Grow as we grow as a company

Public Cloud - Backend Developer Lead – Senior Vice President

Are you a talented Backend Developer Lead looking for their next challenge? Do ...

Location

India , Pune

Salary:

Not provided

Citi

Expiration Date

Until further notice

Requirements

Experience of leading engineering teams in a complex dynamic corporate environment
Extensive experience in systems engineering and architecture, with a proven track record of leading complex projects
Strong understanding of architectural patterns, design principles, and systems engineering methodologies
Excellent communication, interpersonal, and stakeholder management skills
Strong analytical, problem-solving, and decision-making skills
Strong hands-on Java development experience (Java 11/Spring Boot 3.x)
Experience with databases (MongoDB, SQL and Oracle)
Experience with Security - OAuth 2.0 and OpenID Connect with JWT Bearer Tokens and Identity Framework. X509 Cert Security / Windows Security with Java applications, trust chain security and SAML (SSO)
General Networking Experience: IP Address Subnetting, DNS, Firewall Theory
AWS Cloud Network Resources: Transit Gateway, VPC, Direct Connect, Route53, Application and Network Load-balancing

Job Responsibility

Leadership: Manage, mentor and develop the team while providing strong technical guidance, fostering a culture of innovation and collaboration
Architectural Design: Develop and maintain system architectures, ensuring scalability, reliability, and performance
Performance Optimization: Monitor system performance and identify areas for optimization, ensuring efficient resource utilization
Partner and Collaborate: Establish partnerships across the broader Citi technology landscape to align with business growth initiatives and priorities
Champion Compliance: Drive compliance with applicable standards, policies, and regulations, always assessing risk with Citi's reputation, clients, and assets in mind.

Fulltime

Backend Lead Developer

As a member of our Optimization & Data team, you will be responsible to assist u...

Location

France , Paris

Salary:

Not provided

Artelys

Expiration Date

Until further notice

Requirements

At least 5 years of experience in a similar position
Proficient in backend programming (Java/Spring and/or Python, REST API, message queues, SQL)
Abilities to develop scalable software solutions with strong availability, security and efficiency constraints
Master object-oriented programming and principles on design and software architectures
Good knowledge of data structures and algorithms
Master the main modern development tools (git in particular)
Fluent in English

Job Responsibility

Participate in the development of our software solutions (application servers, web services, calculators, etc.)
Lead the development teams, train and support less experienced members of the teams
Take a proactive role in the design of new major functionalities
Work in close relationship with Product Managers and commercial teams to define priorities, determine their value and plan their realization in an optimal way
Implementing tools and best practices to enhance the work of your team by promoting goodwill, cooperation and dynamism

What we offer

Up to 2 days of remote work per week possible
Flexible working hours
Offices located in the city center of each city where we are located

Fulltime

Lead Backend AEM Developer

As a Lead AEM Backend Developer, you are passionate about experiencing innovatio...

Location

United States

Salary:

90000.00 - 140000.00 USD / Year

Valtech

Expiration Date

Until further notice

Requirements

Proven professional experience in AEM development as technical lead
Knowledge of Agile principles – scrum, backlog, sprint, etc.
Strong proficiency in modern software development and Git
Hands-on experience building backend and experiences with Edge Delivery Services and modern AEM assets as well AEM authoring tooling including either Document Authoring or Universal Editor approaches
Experience with Content Fragments and Experience Fragments, ideally with GraphQL
Experience in creating Sling Servlets and OSGi Services and creation of content imports
Experience in AEM asset management
Experience in consuming third-party APIs
Hands-on or exposure to AEM Cloud Service and AEM Cloud Manager setups
User access management, ACL configurations

What we offer

A comprehensive insurance plan (Gold, Silver, or Bronze modules)
Short- and long-term disability coverage
Dialogue via Sun Life provides virtual healthcare services
Employee and Family Assistance Program
Complete mental health support program
$500 Personal Spending Account
Retirement plan with RRSP matching up to 4% via DPSP
Flexible vacation policy
Personal Technology Reimbursement – $30/month

Fulltime

Lead Java Backend Principal Developer

The Senior Backend Principal Developer (or Applications Development Technology L...

Location

Canada , Mississauga

Salary:

120800.00 - 170800.00 USD / Year

Citi

Expiration Date

Until further notice

Requirements

6-10 years of extensive experience in backend software development, with significant experience in architecting and leading complex, large-scale enterprise platforms
Demonstrated experience in a Principal or Lead Developer role, with a strong track record of technical leadership and hands-on contribution
Expert-level proficiency in modern Java backend programming language and associated frameworks
Deep understanding and practical experience with distributed systems, microservices architectures, and RESTful API design
Proven experience with identity and access management (IAM) solutions, including SSO protocols (e.g., OAuth2, OpenID Connect) and fine-grained authorization
Solid experience with cloud-native development principles, containerization (Docker), orchestration (Kubernetes), and Cloud Adoption (GCP and AWS)
Strong knowledge of database technologies, including both relational and NoSQL databases
Exceptional problem-solving and analytical skills, with the ability to tackle ambiguous problems and drive solutions
Excellent communication, presentation, and interpersonal skills, capable of influencing technical decisions and collaborating effectively across diverse teams
Hands-on experience with the other Backend technologies: Unix, Oracle, Any caching solutions and any AI adoption

Job Responsibility

Provide technical leadership and strategic direction for backend development, influencing architectural decisions and technology choices
Design, develop, and maintain high-performance, fault-tolerant backend services and APIs using modern programming languages and frameworks. This includes core components for user authentication, authorization, content routing, and data integration
Lead the definition and evolution of backend architecture, ensuring alignment with principles of scalability, security, reliability, and maintainability in a federated system
Implement and enforce robust security measures, including single sign-on (SSO), centralized entitlements, and adherence to cyber defense standards across all backend components
Optimize backend systems for speed and efficiency, incorporating caching strategies, asynchronous processing, and efficient data access patterns
Architect and implement solutions for integrating diverse Content Provider applications into the unified platform via HTTPS-based interfaces
Mentor senior developers, conduct in-depth code reviews, and champion best practices in software engineering, including design patterns, testing methodologies, and operational excellence
Serve as a subject matter expert for complex production issues, leading root cause analysis and resolution efforts for critical backend services
Partner closely with product management, front-end teams, architects, and infrastructure teams to translate business requirements into technical solutions and deliver features end-to-end
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

Fulltime

Lead Backend Engineer – Python (Team Lead)

Lead Backend Engineer – Python (Team Lead) role at Xelix, working with world’s l...

Location

United Kingdom , London

Salary:

Not provided

Xelix

Expiration Date

Until further notice

Requirements

5+ years of professional development experience
Minimum of 2 years experience leading a development team of at least 3 people
Computer Science or similar technical degree
Strong understanding of the Python / Web development ecosystem
Familiarity with building RESTful APIs with Django Rest Framework (Flask experience acceptable)
Experience developing robust and scalable solutions in Python
Experience with relational databases (PostgreSQL on AWS)
Experience implementing performance improvement strategies
Strong Computer Science fundamentals

Job Responsibility

Support developers when they are stuck on a problem
Facilitate architectural decision making
Share knowledge to maintain DRY principles and ensure codebase consistency
Keep up to date with industry developments and bring new technology to the team
Mentoring, training and career planning for team members
Conducting monthly 1-1 sessions
Collaborating with the Product Team to prioritise and allocate tasks
Recruitment
Promote managerial best practice with team lead peers

What we offer

27 days of annual leave (including 3 days Christmas closing) with increases based on tenure
Option to roll over, buy or sell up to 3 days leave
Hybrid working with one day a week from dog-friendly Hoxton office
On-site gym
Cycle to work scheme
Employee discount at over 100 retailers
Comprehensive private medical & dental cover with Vitality
Enhanced parental leave pay
Learning & development culture – £1,000 personal annual budget
Carbon-neutral company working towards carbon reduction goals

Fulltime

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