Senior Golang Engineer – AI Products & Platforms

Posted Yesterday
Be an Early Applicant
London, England, GBR
In-Office
Senior level
Fintech • Financial Services
The Role
Design and build scalable AI-powered backend services and APIs in Golang for cloud-native, microservices-based platforms. Develop developer tools, ensure observability, CI/CD, and performance, solve distributed-systems challenges, and mentor engineering teams to deliver production-ready solutions.
Summary Generated by Built In

Join Citi’s AI Product & Platform team, a high-growth engineering group operating with a start-up mentality inside one of the world’s largest financial institutions. Working within the Chief Technology Office, you’ll help build the next generation of AI-powered products and platforms that will shape how technology is delivered across the bank. This is an opportunity to work at the forefront of Generative AI, cloud-native engineering and distributed systems, building scalable solutions from the ground up while collaborating with some of the industry’s most talented engineers and AI specialists.
 

Key Responsibilities

  • Design and build AI-powered products and platforms using Golang.
  • Develop high-performance backend services and APIs that operate at enterprise scale.
  • Build and enhance internal developer tools, frameworks and reusable components.
  • Partner with product, engineering and AI teams to turn innovative ideas into production-ready solutions.
  • Contribute to the design and implementation of cloud-native, microservices-based architectures.
  • Drive engineering best practices across code quality, testing, observability and CI/CD.
  • Solve complex distributed systems challenges, focusing on scalability, resilience and performance.
  • Mentor engineers and contribute to a collaborative, high-performing engineering culture.
     

Skills & Experience

  • Golang (Go) expertise is essential, with a proven track record of building scalable, business-critical applications in production environments.
  • Strong experience designing and developing large-scale backend services and APIs.
  • Proven ability to build and operate systems within microservices and distributed environments.
  • Experience with cloud-native technologies, containerisation and Kubernetes.
  • Strong understanding of software engineering fundamentals, system design and performance optimisation.
  • Experience building products and platforms from concept through to production.
  • Exposure to AI, Machine Learning or LLM-powered applications is highly desirable.
  • A passion for modern engineering practices, continuous learning and solving complex technical problems.
     

What We Believe In

  • We do not have boundaries between backend engineering and product development, and we expect all our technical staff to contribute to both as needed.
  • We take a product-focused approach to engineering and care about building solutions that are robust, scalable, and easy for developers to use.
  • We enjoy working in a fast-paced team tackling cutting-edge engineering problems by constantly testing and learning.
  • We enjoy pair programming for our platform services; we are lean in our approach and remove bureaucracy where we see it.
  • We believe in delivering working software fast, iterating and pivoting as we go, rather than defining the perfect architecture upfront.

What we’ll provide you

This is a unique role that will put you in the position to be part of a new venture and actively drive change. Every day there will be new challenges that will help you develop new skills that can drive your career.  

By joining Citi London, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

  • 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  
     

Visit our Global Benefits page to learn more. 

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

​#LI-AH4

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Job Family Group: Technology

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Job Family:Applications Development

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Time Type:Full time

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Most Relevant Skills Please see the requirements listed above.

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Other Relevant Skills 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.

 

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.

Skills Required

  • Golang (Go) expertise with production experience
  • Designing and developing large-scale backend services and APIs
  • Building and operating systems in microservices and distributed environments
  • Experience with cloud-native technologies, containerisation and Kubernetes
  • Strong understanding of software engineering fundamentals, system design and performance optimisation
  • Experience taking products and platforms from concept to production
  • Exposure to AI, Machine Learning or LLM-powered applications
  • Mentoring engineers and contributing to a collaborative engineering culture

Citi Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Citi and has not been reviewed or approved by Citi.

  • Healthcare Strength Benefits coverage is positioned as comprehensive, including health, dental, and vision insurance plus on-site clinics, prescription drug support, and disability coverage. Family-building support such as fertility assistance is described as a notable differentiator within the overall package.
  • Retirement Support Retirement benefits are framed as strong, highlighted by a 401(k) with matching and additional plan options like a Roth 401(k). Financial support is reinforced through discounts and broader financial guidance resources tied to the benefits ecosystem.
  • Wellbeing & Lifestyle Benefits Wellbeing support extends beyond insurance through programs like an Employee Assistance Program, counseling/legal resources, and gym or wellness reimbursement. These offerings increase the perceived total rewards value even when cash compensation sentiment varies by role.

Citi Insights

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The Company
HQ: Kwun Tong, Kowloon
223,850 Employees

What We Do

Citi's mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth and economic progress. Our core activities are safeguarding assets, lending money, making payments and accessing the capital markets on behalf of our clients. We have 200 years of experience helping our clients meet the world's toughest challenges and embrace its greatest opportunities. We are Citi, the global bank – an institution connecting millions of people across hundreds of countries and cities.

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