Assistant Manager, Technical Implementation

Gather and analyze business and technical requirements, translating client trading and connectivity needs into scalable FIX solutions, across multiple asset classes (including equities, futures, options, foreign exchange, fixed income).

Deliver end-to-end FIX onboarding and connectivity projects, coordinating with clients, brokers, and vendors to configure, test, certify, and deploy FIX order routing and execution workflows

Lead critical initiatives including session migrations, platform upgrades, broker algorithm implementation, and connectivity improvements

Collaborate daily with regional FIX teams and cross-functional partners, including Professional Services, Account Management, Sales, Product, Support, and Engineering, to identify and deliver effective solutions

Serve as the FIX domain expert for clients and internal teams, providing technical guidance, resolving onboarding issues, and supporting complex post-production FIX incidents (L3)

Drive continuous improvement through process optimization, standardization, knowledge exchange, and the adoption of automation and AI-enabled tools

Qualifications and Experience:

Required Qualifications

Solid understanding of FIX Protocol (FIX 4.2 /FIX 4.4.)

Experience working in financial services industry and electronic trading environments, ( eg sell-side, buy-side, OMS/EMS provider, technology or FIX vendor or similar firms)

Experience onboarding clients and/or brokers, including FIX conformance and certification testing

Familiarity with networking and connectivity concepts such as TCP/IP, VPNs, extranet connectivity

Excellent written and verbal communication skills in English, with the ability to work effectively with both technical and non-technical partners

Strong analytical and problem-solving skills

Ability to balance multiple initiatives, adapt to changing priorities in a fast-paced environment

Ability to work independently with minimal guidance while collaborating effectively across globally distributed teams

Good understanding of Unix or Linux-based operating systems

Preferred Qualifications

4+ years experience in FIX onboarding, technical implementation, electronic trading support or a related field

Solid grasp of equities and derivatives trading workflows, including futures and options

Knowledge of XML, including ATDL development and testing

Knowledge of relational databases and SQL

Familiarity with Jira, Confluence, SharePoint, Salesforce, or similar tools

Scripting or programming skills (e.g. Python, Shell, Java)

Experience delivering automation and process improvement initiatives

What Will Help You Succeed

Attention to detail combined with a practical, goal-oriented approach

A customer-focused approach and dedication to delivering outstanding service

Strong relationship-building skills and the ability to collaborate effectively across teams, functions and regions

Curiosity, initiative and continuous improvement mentality

Career Stage:

Senior Associate

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.

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