Internal Developer Tools Software Engineer Jobs in Brooklyn, NY

Summary
We are looking for a Senior Associate Software & Platform Engineer to join our FX Engineering group as an individual contributor. This role is suited for an engineer who has strong foundational experience in Java application development, Spring Boot, build systems, testing practices, CI/CD, and cloud-based platform engineering.
The successful candidate will contribute to the development, testing, deployment, and support of microservices and platform components used within a large-scale trading technology environment. This role will work closely with senior engineers, technical leads, DevOps/SRE teams, architects to deliver secure, reliable, and maintainable software solutions.
Key Responsibilities

• Develop and maintain Java-based applications and microservices using Spring Boot.
• Build clean, efficient, testable, and maintainable code aligned with engineering standards.
• Work with build systems such as Maven or Gradle to compile, package, test, and manage application dependencies.
• Create and maintain unit tests and integration tests to ensure software quality and reduce production risk.
• Support application build, deployment, and release activities using CI/CD platforms.
• Contribute to automation of development, testing, deployment, and operational workflows.
• Work with public cloud platforms such as Azure, AWS, or GCP to support application deployment and runtime operations.
• Assist with troubleshooting application issues across code, configuration, build, deployment, and cloud environments.
• Collaborate with senior engineers and platform teams to improve reliability, observability, and operational readiness.
• Participate in Agile ceremonies, sprint planning, backlog refinement, and regular engineering discussions.
• Contribute to technical documentation, runbooks, troubleshooting guides, and knowledge-base updates.
• Learn and apply DevOps/SRE principles including automation, monitoring, incident awareness, and production support practices.
• Support continuous improvement across code quality, testing coverage, deployment reliability, and developer productivity.
• Use AI-assisted engineering tools where appropriate to help with code analysis, test generation, documentation, troubleshooting, and workflow automation.

Required Skills & Experience

• Hands-on experience with Java development.
• Experience building applications or services using Spring Boot.
• Experience with Java build tools such as Maven or Gradle.
• Strong understanding of software development fundamentals, including clean coding, debugging, source control, and code reviews.
• Experience writing and maintaining unit tests and integration tests.
• Knowledge of CI/CD concepts and experience working with CI/CD platforms such as GitLab CI/CD, GitHub Actions, Jenkins, Azure DevOps, or similar tools.
• Experience with at least one public cloud platform such as Azure, AWS, or GCP.
• Familiarity with microservices concepts, REST APIs, application configuration, logging, and service deployment.
• Basic understanding of containerization and cloud-native application practices.
• Ability to troubleshoot technical issues using logs, metrics, build output, test results, and application behavior.
• Good understanding of Agile software delivery practices.
• Strong communication skills and ability to collaborate effectively with globally distributed teams.
• Ability to work as an individual contributor while taking ownership of assigned development, testing, and support tasks.

Desired Skills

• Exposure to Kubernetes, Docker, Helm, or container-based deployment platforms.
• Experience with observability or monitoring tools such as DataDog, Grafana, Prometheus, Splunk, ELK/OpenSearch, or similar platforms.
• Exposure to secure software development practices, secrets management, vulnerability scanning, or cloud security controls.
• Python development experience, including designing and implementing reusable Python packages, shared libraries, automation utilities, or internal developer tools.
• Experience with agent development, including building, configuring, testing, and deploying AI agents or workflow automation agents.
• Exposure to deploying and operating custom AI/ML models in cloud environments, including model packaging, runtime configuration, monitoring, and integration with application workflows.
• Understanding of agentic development principles and best practices, including prompt design, tool/function calling, guardrails, observability, evaluation, testing, versioning, and responsible use of AI-enabled automation.
• Experience using AI-assisted tools to improve developer productivity, generate tests, analyze code, automate operational workflows, accelerate incident diagnosis, or enhance observability.

Critical Thinking & AI-Enabled Engineering
We value engineers who think critically, ask thoughtful questions, challenge assumptions respectfully, and use data to understand problems before proposing solutions.
Experience using data-driven insights and AI-assisted tools to improve observability, automate operational workflows, accelerate incident diagnosis, generate tests, support code analysis, or improve developer productivity is highly valued.
You do not need to be an AI specialist. Curiosity, a learning mindset, and the practical application of AI-enabled engineering practices are most important.
Career Stage:
Senior Associate
Compensation/Benefits Information:
LSEG is committed to offering competitive Compensation and Benefits. The anticipated base salary for this position is $100,200 - $167,000.
Please be aware base salary ranges may vary by geographic location, city and state. In addition to our offered base salary, this role is eligible for our Annual Incentive Plan (AIP/"bonus plan"). Target AIP rates will be commensurate with role level and posted career stage. Individual salary will be reflective of job related knowledge, skills and equivalent experience. LSEG roles (excluding internships and part-time roles of less than 20 hours per week) are typically eligible for inclusion in our LSEG Benefits program, which includes offerings of: Annual Wellness Allowance, Paid time-off, Medical, Dental, Vision, Flex Spending & Health Savings Options, Prescription Drug plan, 401(K) Savings Plan and Company match. LSEG's Benefits plan also includes basic life insurance, disability benefits, emergency backup dependent care, adoption assistance commuter assistance etc.
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.