Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.
Banamex is transforming—and we’re doing it from the inside out.
We’re rebuilding one of Mexico’s most iconic banks into a modern, cloud-enabled, API-driven financial platform that moves at fintech speed while operating at national scale.
As our Head of Applications Architecture, you will report directly to the CTO and play a hands-on, execution-focused role at the center of that transformation. Your mission: turn architectural vision into real systems—working side by side with engineering teams to design, implement, and scale transition architectures that move us decisively toward our target state.
This is not a distant governance role. You will be embedded in delivery—shaping solutions, unblocking teams, and ensuring that what we build today accelerates where we need to be tomorrow.
From cloud adoption and integration patterns to domain evolution and engineering practices, you will be a critical bridge between architecture and execution across the organization.
If you want to influence direction and see it implemented at scale, this is where it happens.
What you’ll own
Solution Architecture Leadership
Partner directly with development teams to design and implement end-to-end solutions aligned with target architecture—balancing speed, scalability, and maintainability.
Transition Architectures
Define and evolve pragmatic transition states that enable incremental modernization without disrupting business continuity.
Cloud Adoption Enablement
Drive adoption of cloud-native patterns and services (AWS/Azure/GCP), ensuring solutions are designed for scalability, resilience, and cost efficiency.
Integration & API Strategy
Standardize and implement integration patterns (REST, events, messaging) that reduce coupling and enable faster cross-team delivery.
Engineering Practices Influence
Promote and embed modern practices—CI/CD, DevOps, observability, resilience engineering—through direct collaboration with engineering teams.
Domain & System Evolution
Help teams decompose monoliths, define clearer service boundaries, and align systems with business domains.
Architecture in Execution
Act as a hands-on design authority within delivery cycles—participating in solution design, trade-off decisions, and technical problem solving.
Cross-Functional Collaboration
Serve as a key connector between Architecture, Engineering, Security, Data, and Product—ensuring cohesive, end-to-end solutions.
Governance that Enables Delivery
Establish lightweight, pragmatic governance that accelerates decisions rather than slowing teams down.
What makes this opportunity special
Architecture that ships
You won’t just define strategy—you’ll see it implemented in production.
Embedded influence
Work directly with engineering teams, shaping real systems and outcomes.
Transformation with momentum
Be part of a fast-paced modernization effort with visible progress and executive backing.
Enterprise impact
Your decisions will influence systems used by millions across Mexico.
What you’ve done (Required)
12+ years in software engineering and architecture, with strong hands-on solutioning experience
Proven experience working closely with development teams to deliver complex systems
Track record implementing modernization initiatives (monolith to services, cloud adoption, API enablement)
Strong expertise in distributed systems, APIs, and integration patterns
Practical experience with cloud platforms (AWS, Azure, or GCP) and hybrid environments
Deep understanding of system design trade-offs in high-scale, high-availability environments
Experience embedding DevOps, CI/CD, and modern engineering practices into delivery teams
Strong stakeholder management with the ability to influence both engineers and executives
Nice to have
Experience in financial services or regulated environments
Exposure to payments (SPEI/CoDi), digital banking, or core banking systems
Familiarity with domain-driven design (DDD) in large organizations
Experience with event streaming platforms (e.g., Kafka)
Background in platform engineering or internal developer platforms
What success looks like
Transition architectures actively adopted and implemented by engineering teams
Faster delivery with reduced architectural friction
Increased consistency in integration and system design patterns
Clear progress toward target architecture without disruptive rewrites
Strong collaboration between architecture and engineering, with shared ownership of outcomes
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Technology
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Technology Management
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Full time
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Please see the requirements listed above.
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For complementary skills, please see above and/or contact the recruiter.
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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.
