About the role

What will you do at Citi?

About the Role

We are seeking an experienced, hands-on Senior . Net Lead to

contribute to the development of our engineering frameworks, with a strong focus

on microservice architecture. This senior engineering leadership role merges

hands-on technical contribution with organizational accountability. The ideal

candidate will remain deeply involved in the code and architecture while

simultaneously owning the platform strategy, defining engineering standards, and

guiding a scrum team in developing core functionalities within the payments

lifecycle.

Key Responsibilities

1. Hands-On Technical Contribution & System
Design Actively code in .Net developing reusable frameworks while performing
system design, architecture reviews, and code reviews for the core cheque
payment platform. Contribute to the design of distributed, fault-tolerant,
real-time systems for high-volume, low-latency transaction processing. Write,
review, and refactor production-grade code in .Net setting a high technical
standard for the team. Independently design event-driven, microservices-based
architectures utilizing REST APIs, .Net. React knowledge is a plus. Apply
hands-on experience with Kafka, including message schema design, topic
partitioning, consumer group strategies, and fault-tolerant processing. Design
and govern data architecture across Oracle (SQL) and MongoDB (NoSQL), covering
schema design, indexing strategies, query optimization, and data consistency
patterns. Champion continuous development, feature flags, and progressive
delivery, contributing to the design and optimization of CI/CD pipelines.
Produce and review Architecture Decision Records (ADRs) and technical design
documents for key platform components. 2. Engineering Excellence & Quality
Maintain and enforce engineering standards within the scrum team, including
Test-Driven Development (TDD), reusable framework development, CI/CD, secure
coding, and observability. Conduct code reviews for critical platform
components, providing detailed technical feedback to enhance team quality and
capacity, ensuring the development of scalable and reusable services. Drive the
adoption of AI-powered quality practices, including leveraging tools like GitHub
Copilot for coding, utilizing LLMs (Gemini experience preferred) to improve
payment processing quality, and implementing automated test script generation
and vulnerability remediation. Lead performance engineering initiatives,
including profiling JVM-based applications identifying performance hotspots, and
optimizing critical settlement processing paths. Own the security and compliance
posture of the cheque payment platform by participating in threat modeling,
vulnerability assessments, and secure design reviews. Ensure all engineering
delivery aligns with Citi Engineering Excellence Standards, including CI/CD,
DevOps, cloud-native practices, and modern ways of working. 3. Platform Strategy
& Domain Ownership Define and own the engineering roadmap for modernizing the
cheque payment platform, migrating global components from monolithic mainframe
and legacy applications to a reusable microservices architecture. Develop strong
domain knowledge in the payment lifecycle, settlement, and cheque image
processing to inform sound engineering decisions. Own the platform's SLA
commitments, driving architectural decisions to meet availability, throughput,
and latency targets. Develop cross-platform integration by governing API
contracts, data flows, and system dependencies across the Payments, Settlements,
DDA, and Data Lake ecosystems. Drive capacity planning and investment
prioritization, making informed decisions on platform scaling, technology
refresh, and resource allocation. Partner with Operations, Risk, Compliance, and
Business teams to ensure the platform meets all regulatory requirements and
business needs. 4. Leadership & Stakeholder Engagement Act as the primary
engineering point of contact for the core Cheque Processing pillar, engaging
with senior business, technology, and operations stakeholders. Clearly
communicate platform health, delivery progress, engineering strategy, and risks
to senior leadership. Partner with Product, Operations, Risk, Finance, and
Compliance teams to align engineering priorities with business and regulatory
needs. Demonstrate the ability to pivot direction to meet timelines and delivery
commitments with tactical solutions, while maintaining a clear vision for
strategic platform development. Skills and Qualifications 1. Core Programming &
System Architecture .Net: 10+ Extensive hands-on experience in high-throughput,
production-grade .Net engineering, including JVM performance tuning. API
Development: Hands-on experience building RESTful APIs with frameworks such as
Spring MVC or Spring Boot. Microservices Architecture: Proven experience
designing microservices ecosystems, including service decomposition, API design,
inter-service communication, and cloud engineering. Event-Driven & Messaging
Systems: Deep, hands-on expertise in Kafka, including topic design,
partitioning, consumer groups, exactly-once semantics, and high-throughput
stream processing. High-Performance Computing: Hands-on experience with
profiling and optimization, including JVM tuning, garbage collection (GC)
optimization, thread management, and memory profiling. High Availability & Fault
Tolerance: Practical experience designing resilience patterns such as circuit
breakers, bulkheads, failover, and disaster recovery. Databases: Hands-on
expertise in Oracle (SQL) and Microsoft SQL for schema design, query
optimization, and indexing, as well as MongoDB (NoSQL) for document modeling,
aggregation pipelines, sharding, and replica sets. 2. Cloud & DevOps
Cloud-Native Engineering: Hands-on experience with OpenShift/AWS, Kubernetes,
and Docker for container orchestration, autoscaling, and cloud-native
deployment. CI/CD & DevOps: Experience designing and owning CI/CD pipelines
aligned with enterprise-level Engineering Excellence Standards. Experience with
tools like Jenkins and Gradle/Maven. Observability: Hands-on experience with
distributed tracing, intelligent alerting, and AI-driven observability using
tools like Grafana. Secure Engineering: Practical experience with threat
modeling, vulnerability assessments, and secure design reviews. Agile at Scale:
Experience with Agile/SAFe delivery at the program level, including PI planning,
cross-team dependency management, and delivery governance. Good-to-Have Skills
ML Integration: Hands-on experience with real-time ML model serving, including
feature stores, online inference, and model monitoring. AI Frameworks:
Familiarity with Retrieval-Augmented Generation (RAG) patterns, vector databases
(e.g., Pinecone, Weaviate), or agentic AI frameworks (e.g., LangChain, AutoGen).
MLOps: Knowledge of MLOps practices such as model versioning, deployment
pipelines, and production model monitoring. Resilience Testing: Experience with
chaos engineering and resilience testing, including fault injection and
production readiness reviews. Financial Systems: Knowledge of reconciliation and
exception handling patterns in settlement workflows. LLM Experience: Familiarity
with prompt engineering and LLM fine-tuning in a regulated enterprise context.
Python: Hands-on expertise in Python for data pipelines, AI/ML integration,
scripting, and automation. Legacy Modernization: Experience with large-scale
transformation projects, including migrating mainframe components (COBOL,
Assembler) and legacy systems (C++, .NET) to a microservices architecture.
Strategy: Experience with technology investment governance and engineering
budget management. What We Are Looking For A hands-on leader who actively
contributes to code, frameworks, reviews, and technical problem-solving. A
strategic thinker who is equally comfortable at the code/architecture level and
the platform strategy/stakeholder management level. A pragmatic innovator who
identifies practical, high-value opportunities to apply AI/ML without losing
focus on engineering fundamentals. An accountable owner with a strong sense of
ownership for platform quality, reliability, and delivery. A mentor committed to
developing engineers and managers, building technical capability and leadership
depth across the team. An effective communicator able to translate technical
complexity into clear, concise updates for business and senior leadership. Why
Join Us Lead engineering for a central global payment platform while remaining
deeply technical. Drive AI and engineering transformation on a high-visibility
modernization initiative with significant business impact. Work at the
intersection of high-throughput financial systems and modern AI capabilities.
Build and mentor a strong engineering team with access to state-of-the-art
tools, platforms, and talent. Be part of an engineering culture that values
technical depth at every level of seniority. Education: Bachelor’s
degree/University degree or equivalent experience Master’s degree preferred
------------------------------------------------------ Job Family Group:
Technology ------------------------------------------------------ Job Family:
Applications Development ------------------------------------------------------
Time Type: Full time ------------------------------------------------------
Primary Location: New Castle Delaware United States
------------------------------------------------------ Primary Location Full
Time Salary Range: $156,160.00 - $234,240.00 In addition to salary, Citi’s
offerings may also include, for eligible employees, discretionary and formulaic
incentive and retention awards. Citi offers competitive employee benefits,
including: medical, dental & vision coverage; 401(k); life, accident, and
disability insurance; and wellness programs. Citi also offers paid time off
packages, including planned time off (vacation), unplanned time off (sick
leave), and paid holidays. For additional information regarding Citi employee
benefits, please visit citibenefits.com. Available offerings may vary by
jurisdiction, job level, and date of hire.
------------------------------------------------------ Most Relevant Skills
Please see the requirements listed above.
------------------------------------------------------ Other Relevant Skills For
complementary skills, please see above and/or contact the recruiter.
------------------------------------------------------ Anticipated Posting Close
Date: Jun 22, 2026 ------------------------------------------------------ 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.

Which skills does this role require?

.NetMicroservices ArchitectureOracle SQLREST APIsOpenShiftAWSKubernetesDockerJVM TuningPythonAI/ML IntegrationSystem DesignMicroservicesRESTReactJenkinsGradleMavenGrafanaDevOpsLLMGitHub CopilotRAGLangChainSAFeAgilePayment LifecycleFinancial SystemsC#Machine LearningAccessibilityProduct Strategy

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