Top Tech Jobs & Startup Jobs in NYC, NY

Nine-week summer engineering internship at LSEG for junior undergraduate STEM students. Interns may work in development, programming, business analysis, or technology project management across data, markets, risk, and engineering functions. Responsibilities include analyzing information, solving problems, collaborating with colleagues, and contributing to real business projects. The recruitment process includes technical and coding assessments, online assessment, video interview, and a virtual assessment centre.

Lead business development to attract Americas-based issuers to London Stock Exchange markets (Main Market, AIM, PSM). Manage a portfolio of companies, private equity and VC contacts, run marketing and event outreach, collaborate with internal LSEG teams, supervise junior staff, and represent LSEG publicly. Drive client engagement, strategic feedback to product teams, and deliver region-focused campaigns and targets.

Monitors real-time and post-trade activity across LSE 24 and related trading venues. Investigates unusual trading, potential market abuse, disorderly conditions, trading halts, and Exchange Rule breaches. Analyzes trading data and surveillance outputs, prepares investigation reports, responds to member enquiries, and supports market oversight, surveillance-control improvements, testing, and operational readiness across multiple time zones.

Develop Python-based scalable research platforms, analytical libraries, and data pipelines for index research. Build high-performance data processing using Polars, PyArrow, and SQL, integrate solutions on AWS, design APIs, apply AI/LLM tools, and promote modern engineering practices (testing, CI/CD, code review) while collaborating with quantitative researchers and product teams.

Develop technical solutions for customer challenges involving quantitative financial data. Lead pre-sales discussions, gather and document requirements, design solutions, demonstrate products, support proofs of concept and proposals, and coordinate custom integration projects with Sales, Product, and other internal teams.

Develop and structure quantitative investment strategy index products across asset classes. Partner with research, sales, clients, and technology teams to innovate index construction, define methodologies, create research and marketing materials, and support business planning. Build and enhance Python-based backtesting capabilities using object-oriented programming, optimize code performance, and contribute to front-to-back architecture, validation, calculation, and publication processes.

The Senior Quant Analyst will develop and maintain quantitative data processing pipelines, optimize workflows for financial datasets, and collaborate with various teams for robust system implementations, while supporting CI/CD, monitoring performance, and enhancing team skills.

Senior contributor on the Americas buy-side index sales team responsible for growing FTSE Russell index usage across clients' investment products. Lead strategic account plans, manage key relationships, develop sales pipeline for ETFs, mutual funds, direct indexing and retirement products, coordinate cross-functionally (Product, Legal, Research, Marketing), negotiate licensing/commercial deals, resolve contractual issues, deliver market insights, and travel frequently to engage clients.

Manage a portfolio of clients and drive new business for SEDOL Masterfile licensing in the Americas. Create and execute sales plans, perform licence reviews, resolve disputes over data usage, negotiate contracts, and provide customer insights to product and account teams. Build C-suite relationships, drive retention strategies, and share expertise in group training.

Lead product development for futures clearing workflows (trade capture through post-trade) focused on FCMs, clearing brokers, and client service teams. Define roadmap, work with exchanges and engineering, drive adoption with clearing members, and improve operational efficiency and client experience while ensuring governance and measurable outcomes.