Senior Software Engineer (JavaScript/TypeScript/Node.JS)

About Us:LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our customers expect from us. With extensive experience, deep knowledge and worldwide presence across financial markets, we enable businesses and economies around the world to fund innovation, manage risk and create jobs. It’s how we’ve contributed to supporting the financial stability and growth of communities and economies globally for more than 300 years. Through a comprehensive suite of trusted financial market infrastructure services – and our open-access model – we provide the flexibility, stability and trust that enable our customers to pursue their ambitions with confidence and clarity.LSEG is headquartered in the United Kingdom, with significant operations in 70 countries across EMEA, North America, Latin America and Asia Pacific. We employ 25,000 people globally, more than half located in Asia Pacific.Proud to share LSEG in Romania is Great Place to Work certified (Sept ’24 – Sept ’25). Learn more about life and purpose of our company directly from the Romanian colleagues’ video: Bucharest, Romania | Where We Work | LSEGRole Description:Workspace Digital Journeys team is on a mission to provide financial professionals with a flawless, intuitive and personalised onboarding, learning and support experience in LSEG Workspace – LSEG's flagship SaaS financial platform. Helping while never getting in the way. We enable our customers to discover new and existing features in a vast universe of applications and market data.We're looking for a Senior Software Engineer to join a highly collaborative, multi-functional, agile product development team responsible for building the best-of-class core UIs focusing on customer experience, engineering perfection and time-to-market.Key Responsibilities:Software Development:Design, develop, and maintain web apps and web services using ensuring scalability, security, and high performanceWrite clean, efficient, and well-documented codeConduct code reviews and establish standard processes for software developmentSystem Design and Architecture:Architect, deploy, and run applications on AWS and Azure platformsOptimise cloud infrastructure for cost-efficiency and performanceContribute to architectural decisions for back-end systems, ensuring alignment with business goals and technical requirementsCollaborate with Product, Design, DevOps engineers to build end-to-end solutionsIdentify and resolve performance bottlenecks and system issuesImplement robust monitoring and alerting solutionsProject Management:Participate in sprint planning, task estimation, and roadmap developmentEnsure timely delivery of projects, meeting both technical and business objectivesEssential Technical Skills and Experience:5+ years of professional experience in software developmentProficiency in JavaScript, TypeScript, Node.jsKnowledge of RESTful API design and micro-services architectureA deep understanding of how Web Browsers work, including in-depth knowledge of:Native browser (DOM) APIsObject-Oriented and Functional ProgrammingPerformance - Layout/Rendering/GC/Object (memory) ManagementUnderstanding of how web frameworks like Angular/React/Vue work under-the-hoodExperience with CI/CD pipelines and DevOps practicesExperience with Cloud Computing (AWS, Azure)Excellent problem-solving skills and ability to work in a fast-paced, agile environmentBenefits:We are looking for intellectually curious people, passionate about the bigger picture of how technology industry is evolving, ready to ask difficult questions and deal with complicated scenarios! If you are creative and a problem solver, this is the place to be as will be supporting you to fast-forward your career!We maximise each employee’s potential through personal development through a wide range of learning tools both formal and informal. We believe in remunerating our people with competitive salaries and a range of attractive benefits such as:25 days’ holiday per year1 additional day off for your BirthdayAnnual wellness allowanceShare Purchase PlanMedical Health InsuranceMedical Subscription (preventive medical services)Life insurancePillar 3 Private PensionMeal VouchersFlexible BenefitsBooksterVolunteering EventsAll LSEG colleagues with at least one year’s continuous service, who become parents, are now entitled to at least 26 weeks’ paid leave, and the option to return to work on a phased basis, in relation with specific company’s policy and guidelinesLSEG 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. You will be part of a collaborative and creative culture where we encourage new ideas and are committed to sustainability across our global business. You will experience the critical role we have in helping to re-engineer the financial ecosystem to support and drive sustainable economic growth. Together, we are aiming to achieve this growth by accelerating the just transition to net zero, enabling growth of the green economy and creating inclusive economic opportunity.LSEG offers a range of tailored benefits and support, including healthcare, retirement planning, paid volunteering days and wellbeing initiatives.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.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.