Jobs at Jefferies

Design, enhance, and maintain Snowflake/AWS-based historical time series infrastructure for market risk. Build Python ETL/ELT pipelines and optimized SQL models, source and validate end-of-day market data, implement data-quality remediation (gap-filling, back-filling, anomaly correction), collaborate with Market Data and Risk teams to ensure auditable, reproducible risk inputs for VaR and regulatory use.

Support the lead analyst covering Integrated Oil & Gas: maintain and develop Excel-based financial models, forecast commodity prices, contribute thematic and stock-specific research, assist client marketing and corporate access, and support Investment Banking and Corporate Broking colleagues.

Provide hands-on technical configuration, integrations, data migration, troubleshooting, and support for Oracle HCM Cloud modules. Build OIC and REST/SOAP interfaces, create Fast Formulas, HCM Extracts, BI Publisher reports, perform data audits, and produce technical documentation and test artifacts.

Join Jefferies London M&A team supporting Greek-focused buy- and sell-side deals. Build financial models (DCF, comps, LBO), prepare pitchbooks and IMs, perform company/market research, assist due diligence, and coordinate stakeholders across cross-border transactions. Native Greek and strong English required.

Design, develop, and support high-performance swaps trading and post-trade systems focused on corporate actions processing. Implement trade capture, booking, validation, lifecycle events, settlements, reconciliations, and event-driven workflows. Collaborate with trading, operations, risk, finance, and technology teams, troubleshoot production issues, and contribute to architecture, code reviews, testing, and engineering best practices.

Lead design and implementation of scalable, low-latency equities trading systems. Hands-on Java development, provide technical guidance, enforce code quality, mentor engineers, collaborate with global stakeholders, and drive CI/CD, cloud, and DevOps practices to meet performance, reliability, and business requirements.

Lead design, development, and production deployment of a bond analytics library for fixed income and structured products. Oversee model development, validation, and risk measurement (VaR, sensitivities, stress testing), ensure regulatory compliance, architect scalable quantitative libraries, collaborate with business and regulatory stakeholders, and mentor junior team members.

Support development and maintenance of equity derivatives risk analytics: volatility calibration, option pricing, VaR, scenario and stress testing, sensitivity analysis, methodology enhancement, production issue resolution, and stakeholder documentation.

Develop and optimize algorithmic trading software in modern C++ with strong focus on performance, memory management, and multi-threading. Prototype and analyze data using Python/Perl/Shell and SQL, apply ML frameworks, and collaborate globally. Recommend optimizations, use performance tools, and support low-latency trading systems.

Serve as strategic and operational partner to the CIO, driving enterprise initiatives, governance, IT strategy execution, people and engagement programs, communications, and business operations. Lead cross-functional transformation programs, prepare executive materials, manage governance and decision tracking, own talent and campus recruitment, and support organizational design, change management, and administrative compliance.

Join the Industrials equity research team to support the lead analyst with financial modelling, idea generation, written research, presentations, data sourcing, market monitoring, and client interaction, collaborating with Investment Banking and Corporate Broking to grow the franchise.

Design, configure, test and implement reconciliations on a new on-prem AWS platform. Build reconciliations from requirements, analyse source/target data, write and debug SQL, support data migration, manage vendors and stakeholders, and drive control, automation and documentation across reconciliation processes.

Design, build, and maintain core Securities Borrowing & Lending platforms using C#/.NET. Deliver server- and client-side features, automated tests, code reviews, and production support while collaborating with trading, operations, and product stakeholders.

Sell Pan‑Asia Emerging Markets cash equities to North American institutional clients. Grow and manage client portfolios, originate tradeable ideas, coordinate with Asia trading/research/ECM, organize corporate access, ensure execution quality, maintain CRM and compliance, and contribute to desk strategy and revenue targets.

Lead expense analysis, forecasting, and reporting for senior management. Partner with finance, COO teams, and expense owners to drive cost discipline, identify savings, resolve discrepancies, and improve processes. Build dashboards, conduct variance analysis, support budgeting and strategic planning, and prepare executive-ready presentations and ad hoc deep dives.

Hands-on Salesforce engineer building features in a heavily customized org using Apex, LWC, and Flows. Implement integrations (REST/SOAP), ensure code quality and test coverage, debug across layers, follow Git and CI processes, and collaborate with a distributed Agile team to deliver within sprints.

Platform administrator responsible for configuration, security, release and environment management, credential lifecycle and certificate management, large-volume data operations, integration health, org monitoring, and cross-team coordination. Drives governance, documentation, upskilling, and seasonal release/security remediation across a heavily customized global Salesforce org.

Build and execute end-to-end test automation for front-end, back-end, API, ETL/data migration and mobile (iPad). Define test strategies, environments and data, coordinate with product and development teams, run regression and exploratory testing, integrate automation into CI/CD via Jenkins, produce test reports, track defects, and mentor QA resources to ensure high-quality, timely deliveries.

Build and maintain Snowflake-based transformation pipelines to produce governed, analytics-ready fact and dimension tables. Enforce data quality, performance tuning, and access controls. Automate workflows (Airflow, Snowflake Tasks, TWS), monitor pipelines, collaborate with finance and analytics stakeholders, and support downstream consumers.

Support senior bankers on technology investment banking transactions through due diligence, industry research, financial modeling and valuation. Prepare pitchbooks, offering memoranda and management presentations, develop buyer/investor target lists, assist equity and M&A execution, and mentor junior analysts on deal teams.