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Lead Software Developer C# - Trading Systems

Job in Greater London, London, Greater London, W1B, England, UK
Listing for: Marlin Selection Ltd
Full Time position
Listed on 2026-02-16
Job specializations:
  • Software Development
    Software Engineer, Senior Developer
Salary/Wage Range or Industry Benchmark: 60000 - 80000 GBP Yearly GBP 60000.00 80000.00 YEAR
Job Description & How to Apply Below
Location: Greater London

Lead Software Developer C# - Trading Systems

Lead Software Developer C# – Trading Systems

Location:London(City)–Hybrid/Remote Options

Our client is a growing global financial trading firm seeking a senior, hands-on Software Engineer to take ownership of our in-house trading and brokerage platforms.

Thisisahigh-impactleadershiprolereportingdirectlytothe

CEO/COO,offeringdirectexposuretoexecutivemanagementandgenuineinfluenceoverlong-termtechnologystrategy.

The Role

This position combines:

  • Business-facingengagementwithtradersandseniorstakeholders

Key Responsibilities

  • Leaddevelopmentandarchitecturaldirectionofin-housetradingsystems
  • Manageandmentorasmalldevelopmentteam(withplannedgrowth)
  • Reducekey-persondependencythroughdocumentationandknowledgetransfer
  • Drivemodernisationinitiatives,includingmigrationfromlegacytechnologies
  • Partnercloselywithtradingteamsandseniormanagement
  • C#
  • .NET Framework
    4.7.2(Win Forms)
  • MicrosoftSQLServer
  • In-houseFIXengine
  • Excel

    VBA-based tools
  • Fullyin-housedevelopedsystems

Experience Required

  • 7–10+yearssoftwaredevelopmentexperience
  • Strong

    C#and.NET expertise
  • SolidSQLServeranddatabasedesignknowledge
  • Experiencewithintrading,brokerageorfinancialservicesenvironments
  • Understandingofequityand/orderivativestradingworkflows
  • Experienceleadingtechnicalteams
  • Strong problem-solvingcapabilityinhigh-pressure environments
  • FIXprotocolknowledge
  • Experience migrating Win Formstomodernarchitectures

Profile

Wearelookingforsomeonewhois:

  • Commerciallymindedandpragmatic
  • Comfortableoperatingwithautonomyandhighresponsibility
  • Abletobalanceproductionsupportwithlong-termstrategicimprovement
  • Confidentcommunicatingwithbothtechnicalandnon-technical stakeholders
  • Motivatedtobuildsustainable,long-termsystemownership

What We Offer

  • Seniorleadershippositioninagrowingfinancialfirm
  • Business-criticalremitwithgenuineimpact
  • Opportunitytoshapethelong-termtechnologystrategyofaglobaltradingplatform
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