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Senior Lead Scala Engineer, Post Trade

LSEG (London Stock Exchange Group) -
London

Apply Now

Job details

Full-time

Benefits

Paid volunteer time

Qualifications

Cloud architecture
JUnit
Gherkin (programming language)
React
Kubernetes
Kanban
Relational databases
Cucumber (software testing tool)
DevOps
Data structures
Java
Microservices
SQL
OOP
AWS
Database management
Docker
PostgreSQL
Scala
Scrum
Agile
S3
Kafka
Play Framework
GitLab
Communication skills

Full job description

Role Profile

The Senior lead Scala Engineer will play a key role in the engineering and delivery of a critical market‑infrastructure service within the Equities platform, with a strong focus on AWS cloud‑native development. Reporting directly to the Senior Technical Delivery Engineer, Post Trade, the successful candidate will be responsible for designing, implementing, and maintaining performant, resilient, and scalable backend services built predominantly in Scala.

As a senior member of the engineering team, this individual will help shape technical direction, contribute to best-in-class engineering standards, and actively support the continued growth and evolution of the business.

This exciting opportunity requires a candidate to take Pride in their work and Ownership of their work. Have excellent engineering skills, communication skills, can-do behaviour and highly collaborative. Always positively encouraging the team.

Key Responsibilities

A strong focus on engineering excellence and coding, adopting an open and hands-on approach to problem-solving and delivery. Engage deeply in technical design and implementation to ensure solutions are robust, scalable, and aligned with industry best practices. Actively contribute to all stages of the product engineering life cycle—solutioning, design, coding, and testing—while promoting collaboration and transparency within the team to drive high-quality outcomes.

Demonstrate ownership and pride in work, proactively taking on new responsibilities aligned with product engineering needs. Embrace and apply LSEG engineering principles, diving deep technically to build with purpose and foster excellence within the team through open collaboration. Create an environment of engagement, challenge, and constructive questioning, ensuring trust and respect are maintained and a strong one-team mentality is upheld

Key Skills and Experience

Event driven microservices architecture

Strong understanding of microservices design, including pitfalls and best practices.
Knowledge of Domain-Driven Design (DDD) and event-driven architecture principles.
Experience with containerization and orchestration using Docker and Kubernetes.
Skilled in event-driven patterns for efficient and robust communication.
Expertise in building and maintaining DevOps pipelines, ideally with GitLab.
Proficient in shift-left testing using tools like JUnit, Cucumber, Gherkin, PACT, and Test Containers.
Working knowledge of event/message brokers such as Kafka and MQ.

Advanced Scala programming

Strong proficiency in both functional and object‑oriented programming paradigms, with the ability to apply the right approach to deliver robust, maintainable solutions.
Deep practical expertise with Scala, including key frameworks and libraries such as:
Akka – for building concurrent, distributed, and resilient message‑driven systems.
Play Framework – for developing scalable, high‑performance web applications.
Cats / Scalaz – for implementing advanced functional programming abstractions and patterns.
Proven experience delivering enterprise‑grade Scala applications in production environments, with a focus on quality, resilience, performance, and observability.
Strong understanding of data structures, algorithms, concurrency, and multi‑threading, with the ability to design efficient and scalable solutions for high‑throughput systems.

Database Management

Strong SQL knowledge with experience in relational databases such as Postgres.
Working knowledge of object storage solutions, e.g., AWS S3.
Familiarity with database version control tools like Flyway and Liquibase.
Cloud Architecture
Experience working with major public cloud platforms, preferably AWS.
Hands-on use of cloud-based services such as AWS Aurora, MSK, S3, and IAM.
Basic understanding of cloud networking concepts.

Agile Ways of Working

Strong understanding and commitment to the ethos of agile working.
Experience working within Scrum and Kanban frameworks.
Active participation in sprint ceremonies, including Product Backlog Refinement.
Proven collaboration with cross-functional teams in scaled agile environments.
You have some experience of writing applications using Java.
You have developed Web applications using ReactJS.

Career Stage:

Manager

London Stock Exchange Group (LSEG) Information:

Join us and be part of a team that values innovation, quality, and continuous improvement. If you're ready to take your career to the next level and make a significant impact, we'd love to hear from you.

LSEG is a leading global financial markets infrastructure and data provider. Our purpose is driving financial stability, empowering economies and enabling customers to create sustainable growth.

Our purpose is the foundation on which our culture is built. Our values of Integrity, Partnership, Excellence and Change underpin our purpose and set the standard for everything we do, every day. They go to the heart of who we are and guide our decision making and everyday actions.

Working with us means that you will be part of a dynamic organisation of 25,000 people across 65 countries. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.

We are proud to be an equal opportunities employer. This means that we do not discriminate on the basis of anyone’s race, religion, colour, national origin, gender, sexual orientation, gender identity, gender expression, age, marital status, veteran status, pregnancy or disability, or any other basis protected under applicable law. Conforming with applicable law, we can reasonably accommodate applicants' and employees' religious practices and beliefs, as well as mental health or physical disability needs.

You will be part of a collaborative and creative culture where we encourage new ideas. We are committed to sustainability across our global business and we are proud to partner with our customers to help them meet their sustainability objectives. Our charity, the LSEG Foundation provides charitable grants to community groups that help people access economic opportunities and build a secure future with financial independence. Colleagues can get involved through fundraising and volunteering.

LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.

Please take a moment to read this privacy notice carefully, as it describes what personal information London Stock Exchange Group (LSEG) (we) may hold about you, what it’s used for, and how it’s obtained, your rights and how to contact us as a data subject.

If you are submitting as a Recruitment Agency Partner, it is essential and your responsibility to ensure that candidates applying to LSEG are aware of this privacy notice.

Apply Now

Refine Your Search

advanced practice provider jobs in waltham cross, ess

Senior Lead Scala Engineer, Post Trade

Senior Consultant

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MSK Advanced Physiotherapy Practitioner Band 7 - 8a Development post

Advanced Practitioner

South London Clinical Partnership Consultant Dermatologist / Medical Aesthetics Specialist

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Advanced MSK Clinician

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ANP / ACP

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