Citi
London United Kingdom
We are seeking a Lead Engineer to head the
next generation
XiP Compute Service (XCS
2
) team
.
The team works across both Java and Python, and
significant experience
in at least one of these languages is
required
.
In this role you will design, build, and
maintain
the
future
engine room of Citi's enterprise-scale XiNG Platform (XiP)
.
You will be working on a Greenfield build of a major new
component
. The current generation of the product
is responsible for
1.5 billion risk
c
alculations at Citi every day. The next generation of the product is expected to double the customer base and bring in huge new workloads.
You will work closely with other software engineers, DevOps, and our customers to define technical strategy and ensure the reliable, secure, and scalable operation of the platform.
Responsibilities:
Take a lead in defining the long-term strategic direction of XiP:
Apply your experience and skills to develop next generation of the XiP Compute Service — making it faster, utilising resources more efficiently, and scaling to even greater sizes. This means adding new features without
impacting
platform performance in an undesirable manner;
small changes
multiplied by millions of calculations carry
a high cost
. It also means solving hard engineering problems, such as transferring
small amounts
of data to
a huge number
of machines with minimal overhead.
Collaborate with Stakeholders to Define Platform Capabilities:
Partner closely with key business stakeholders, product owners, and end-users to deeply understand their requirements, define the platform's capabilities, and translate business needs into technical specifications and solutions. Drive the implementation of these capabilities, ensuring they align with strategic
objectives
and deliver maximum business value
.
An essential skill will be assessing user requirements against the overall strategy of the application – to ensure
to maintain
a balance between user needs and application philosophy
.
This will mean explai
ning to
senior clients that
some of
their requests
will
not be accepted
,
and crucially why.
Take on the day-to-day leadership of the development team responsible for the next generation of XiP:
Lead the team's Agile/Scrum ceremonies, including sprint planning, daily stand-ups, and retrospectives, to ensure a smooth and effective development workflow. Manage the project backlog, prioritize tasks, and coordinate development efforts to align with the product roadmap and strategic goals. Provide hands-on technical leadership, guiding the team in architectural decisions, enforcing coding standards, and performing code reviews to
maintain
high-quality, robust, and scalable code.
Serve as advisor or coach to team members, allocating and overseeing work:
Mentor and guide developers,
providing
technical advice, code reviews, and career development support. Allocate tasks based on skill sets and project priorities, ensuring balanced workloads and
timely
delivery. Foster a collaborative and growth-oriented team environment, encouraging best practices and continuous learning.
Implement the new generation of Citi's Risk Calculation Engine:
Participate in the design, development, and implementation of the next version of the XiP Risk Calculation Engine, focusing on understanding and fulfilling the needs of new platform customers.
The current generation of the platform regularly parallelizes
250,000 hours
of
compute
into a single 90-minute execution. The new platform needs to
maintain
this performance while enabling new workloads.
Qualifications:
Professional software development experience with
Java or
Python.
Solid experience with
comm
on frameworks
and tooling
(
e.g.
Spring, Spring Boot,
Quarkus
in Java.
Or
Flask,
FastAPI
,
Pydantic
in Python
).
Exposure to cloud platforms (e.g., AWS, Azure, GCP) and containerization (e.g., Docker, Kubernetes).
Experience designing, building, and
maintaining
large-scale, distributed systems.
Experience with RESTful API design and implementation.
Exposure to NoSQL databases (e.g., MongoDB, Cassandra) is a plus. Experience with unit testing, integration testing, and test automation frameworks.
Experience working in Agile/Scrum development environments.
Experience with CI/CD pipelines and DevOps practices is a plus.
Education:
Bachelor’s or
Master’s degree in Computer Science
, Engineering, or
a related
field.
Technology
Applications Development
Full time
Please see the requirements listed above.
For complementary skills, please see above and/or contact the recruiter.
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.
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