We are seeking a high-achieving developer to join our Offensive Security Operations team (OSO). This role will focus on automating processes and building tools to drive down cyber security risk. OSO conducts internal security testing exercises and leads key initiatives to identify and mitigate cyber security risks. Your contributions will be critical in streamlining operations, automating high impact security checks, and supporting the team's long-term success.
Our environment is cloud-native, primarily AWS based with a mature development ecosystem and well-established standards.
Fully test services including unit tests and user acceptance tests.
Provide full documentation ensuring there are appropriate artefacts for maintaining, extending and using your work in your absence.
Ensure all services align with LSEG security standards, team quality controls, and validated approaches.
Continuously evaluate and improve quality and security processes, policies and documentation based on lessons learned and industry developments where possible through automation.
Communicate sophisticated technology concepts and solutions clearly and effectively to technical and non-technical audiences through reports, presentations, and documentation.
Required Experience & Skills
Bachelor's Degree or equivalent experience in Information Systems / Technology, Computer Science / Engineering or equivalent field of study.

Proven experience in crafting design documents
Proven experience with Python 3.7+ and VueJS 2 or 3
Proven experience with API Development (Flask API or any)
Proven experience with CLI tool development (Cleo or any)
Proven experience with Unit testing / Integration / Behavioral testing
Proven experience in maintaining complete software development lifecycle




Proven experience with IaC technology to maintain cloud infrastructure
Proven experience with setting up and managing resources in cloud hosting solutions (AWS preferred)
Proven experience with PowerShell and/or Bash Scripting
Proven experience with containerisation
Solid exposure to different software architectures
Proven experience with RDBMS databases or NoSQL, preferably with MySQL/PostgreSQL or similar
Proven experience with Git repository management - we use Gitlab / Git
Proven experience with Static analysis tooling
Proven experience with CI / CD
Any knowledge of Azure / Graph API Is a bonus
Good understanding of UI/UX
Strong understanding of security vulnerabilities and common software engineering flaws.
Comfortable with Agile practices (Daily standups, retros, demoes)
A disliking for silo operations
Proficiency with designing software and discussing with collaborators over contributing a solution to code
Estimation, Planning and maintenance of the backlog
Comfortable exploring and adopting out of the box solutions including outside of immediate expertise.
This is a great opportunity for an experienced software engineer looking to work in a highly agile security-focused team. Join us and be part of a team that values innovation, quality, and continuous improvement. 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. However, we will value your individuality and enable you to bring your true self to work so you can help enrich our diverse workforce.
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. 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.

📌 Software Development Engineer, AWS (Bengaluru)
🏢 LSEG
📍 Bengaluru