{"id":1388353,"url":"https://alion.io/job/marex-market-data-engineer","title":"Market Data Engineer","company":{"id":1821133,"name":"Marex","domain":"marex.com","url":"https://alion.io/company/marex-com","size_band":"1001-5000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Breezy","truth_index":{"grade":"B","score":80,"open_postings":9,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":4,"computed_at":"2026-10-01T05:45:00Z"}},"role":"Data Science","role_family":"Data Science","seniority":null,"employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":71000,"max_usd":168000,"period":"year","method":"role_country_seniority_unknown","sample_n":93},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":".NET","optional":false},{"name":"Agile","optional":false},{"name":"Amazon EC2","optional":false},{"name":"Amazon S3","optional":false},{"name":"AWS","optional":false},{"name":"C#","optional":false},{"name":"CI/CD","optional":false},{"name":"Dependency Injection","optional":false},{"name":"Docker","optional":false},{"name":"ETL/ELT","optional":false},{"name":"Git","optional":false},{"name":"IAM","optional":false},{"name":"JavaScript","optional":false},{"name":"React.js","optional":false},{"name":"Redis","optional":false},{"name":"SQL","optional":false},{"name":"TypeScript","optional":false}],"status":"closed","first_seen_at":"2026-08-06T14:54:21Z","employer_posted_date":"2026-08-06","last_verified_at":"2026-09-29T19:11:43Z","board_verified":false,"closed_at":"2026-09-29T19:11:43Z","days_open":54,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":54},"description":"About Marex\nMarex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth and depth of coverage across four core services: clearing, agency and execution, market making, and hedging and investment solutions. It has a leading franchise in many major metals, energy and agricultural products, with access to 60 exchanges. The group provides access to the world’s major commodity markets, covering a broad range of clients that include some of the largest commodity producers, consumers and traders, banks, hedge funds and asset managers. With more than 40 offices worldwide, the group has over 3000 employees across Europe, Asia and the Americas.\nFor more information visit https://www.marex.com/\nJob Reference: VN2893\nOverview of Marex / Department description\nMarex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth and depth of coverage across four core services: clearing, agency and execution, market making, and hedging and investment solutions. It has a leading franchise in many major metals, energy and agricultural products, with access to 60 exchanges. The group provides access to the world’s major commodity markets, covering a broad range of clients that include some of the largest commodity producers, consumers and traders, banks, hedge funds and asset managers. With more than 40 offices worldwide, the group has over 3,000 employees across Europe, Asia and the Americas.\nMarex has unique access across markets with significant share globally both on and off exchange. The depth of knowledge amongst its teams and divisions provides its customers with clear advantage, and its technology-led service provides access to all major exchanges, order-flow management via screen, voice and DMA, plus award-winning data, insights and analytics.\nThe Technology Department delivers secure, scalable digital tools, software services, and infrastructure across all business units. Agile development teams align with specific business areas, while other teams handle enterprise-wide IT operations, support, security, and architecture.\nThe Data & AI team drives productivity, compliance, and insights by leveraging a robust Data Lakehouse, decentralizing data access, improving client experiences, promoting data-driven practices, and ensuring efficient, auditable use of data in line with commercial terms.\nRole Summary\nRole specific:\nArchitect and develop enhancements to the Security Master Platform, improving data quality, processing speed, and scalability at enterprise scale. \nDesign and implement robust ETL pipelines to extract, transform, and load reference data from the Bloomberg Data License or alternate vendor APIs and/or file feeds. \nBuild extensible frameworks to onboard new market data vendors and alternative reference data sources as business requirements evolve. \nWrite, optimise, and maintain complex, high-performance SQL queries, stored procedures, and schemas tailored for large-scale financial datasets. \nDevelop and maintain RESTful services using C#, .NET Core/.NET 8+, and Minimal APIs, following modern secure development practices. \nProvide day-to-day operational support to ensure seamless execution of daily data loads, batch processing, and data distribution. \nMonitor the platform proactively, troubleshoot data discrepancies, and rapidly resolve production issues to minimise downstream impact on trading and risk systems. \nImplement automated data validation rules and monitoring alerts to safeguard the accuracy and completeness of Security Master data. \nDevelop usage-tracking capabilities across downstream data consumers to identify and eliminate unused feeds and data duplication, supporting commercial and cost optimisation. \nDeploy and support applications on AWS (EC2, IAM, S3, Redis) using containerised, cloud-native design principles. \nBuild and maintain CI/CD pipelines for automated build, test, and deployment of platform enhancements. \nAct as a technical bridge between the Market Data Engineering team, downstream consumers (trading, risk, compliance), and external vendors. \nAll staff:\nEnsuring compliance with the company’s regulatory requirements under the FCA. \nAdhere to the operational risk framework for your role ensuring that all regulatory or company determined parameters are complied with. \nRole model for demonstrating highest level standards of integrity and conduct and reflecting Company Values. \nAt all times complying with the FCA’s Code of Conduct. \nTo ensure that you are fully aware of and adhere to internal policies that relate to you, your role or any other activities for which you have any level of responsibility. \nTo report any breaches of policy to Compliance and/ or your supervisor as required. \nTo escalate risk events immediately. \nTo provide input to risk management processes, as required. \nThe Company may require you to carry out other duties from time to time\nCompetencies, Skills and Experience\nCore Competencies\nExcellent verbal and written communication skills. \nA collaborative team player, approachable, self-efficient and influences a positive work environment. \nExceptional analytical skills, with the ability to debug complex data lineage issues under time-sensitive constraints. \nResilient and adaptable, comfortable balancing structured development work with fast-paced operational demands. \nAbility to take a high level of responsibility in a fast-paced and high-volume environment. \nExcels at building relationships, networking and influencing others across technical and business teams. \nEssential:\n Skills and Experience\nStrong commercial experience developing enterprise applications using C# and .NET Core/.NET 8+. \nExperience building and maintaining RESTful services using Minimal APIs and modern .NET practices, including async programming, dependency injection, and API performance optimisation. \nAdvanced SQL expertise - writing optimised queries, managing indexes, stored procedures, functions, and views, and debugging complex transactional logic. \nStrong understanding of query execution plans, indexing strategies, transaction management, and database performance tuning. \nExperience designing scalable relational database schemas for high-volume financial data platforms. \nProven experience working with financial reference data and a strong understanding of various asset classes. \nHands-on experience with Bloomberg Data License fields, file formats (per-security requests, bulk files), and FTP/API delivery mechanisms. \nExperience building robust ETL pipelines for ingesting, validating, transforming, and distributing financial market data. \nExperience deploying and supporting applications on AWS, including EC2, IAM, S3, and Redis. \nExperience building and maintaining containerised applications using Docker. \nExperience developing modern web applications using React, with familiarity in JavaScript/TypeScript and component-based architecture. \nExperience using Git for source control, and implementing CI/CD pipelines for automated build, test, and deployment. \nDesirable,\nSkills and Experience\nFamiliarity with other market data providers (e.g., LSEG/Refinitiv, S&P, ICE). \nProficiency in a scripting language to automate file transfers, parsing, system alerts, and operational workflows. \nExperience implementing secure authentication and authorisation mechanisms for enterprise applications. \nUnderstanding of responsive UI design and state management in front-end applications. \nFamiliarity with infrastructure automation and release management processes. \nConduct Rules, You must:\nAct with integrity\nAct with due skill, care and diligence\nBe open and cooperative with the FCA, the PRA and other regulators\nPay due regard to the interests of customers and treat them fairly\nObserve proper standard of market conduct\nAct to deliver good outcomes for retail customers\nCompany Values\nBe collaborative - by working together across the organisation, we foster teamwork, can better respond to challenges and successfully deliver for our clients\nAct with integrity - we pride ourselves on our honesty and high ethical standards. We apply these values when working with all our clients, colleagues and other stakeholders\nBe adaptable and entrepreneurial - we embrace change as markets evolve to constantly increase our efficiency and create innovative solutions for our clients. We are interested in the world around us and inquisitive about understanding the challenges and opportunities our clients face.\nBe respectful - how we treat each other, and our clients says everything about who we are. We always act respectfully and treat people fairly in everything we do.\nNurture talent - we aim to grow our own talent and make Marex the place ambitious, hardworking and talented people choose to build their career. This means giving and taking stretch opportunities, taking risks, and committing to career development and support - for ourselves and our teams.\nMarex is fully committed to being an inclusive employer and providing an inclusive and accessible recruitment process for all. We will provide reasonable adjustments to remove any disadvantage to you being considered for this role. We value the differences that a diverse workforce brings to the company. We welcome applications from candidates returning to the workforce. Also, Marex is committed to avoiding circumstances in which the appearance or possibility of conflicts of interest may exist within the hiring process.\nIf you would like to receive any information in a different way or would like us to do anything differently to help you, please include it in your application.","description_format":"text","description_chars":9967,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-09-28T11:06:40Z"},{"event":"close","at":"2026-09-29T19:11:43Z"}],"liveness":null,"pay":null,"html_url":"https://alion.io/job/marex-market-data-engineer","json_url":"https://alion.io/job/marex-market-data-engineer.json","meta":{"generated_at":"2026-10-01T18:20:39Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","usage":{"tier":"crawler","counted_by":"address","units_charged":1,"used_today":618,"day_limit":5000,"remaining_today":4382,"minute_limit":60,"resets_at":"2026-10-02T00:00:00Z"}}}