Software Developer jobs in Basildon

Optiver is looking for a Software Engineer to join our Developer Experience team. This team is crucial in building the tools and platforms that power our development workflows, enabling our engineers to work fast and with confidence. You’ll be responsible for building the infrastructure, tooling and

Crowe LLP

Software Solutions Developer {"description": " Software Solutions Developer About Crowe Crowe is a leading national audit, tax, advisory and consulting firm with global reach and local expertise. We are an independent member of Crowe Global, one of the top 10 accounting networks in the world, with a

Graduate Software Developer About Reply: Reply specialises in the design and implementation of solutions based on new communication channels and digital media. As a network of highly specialised companies, Reply defines and develops business models enabled by the new models of AI, big data, cloud co

Senior Software Developer / Software Engineer (C# .Net) London onsite to £150k Are you an experienced C#, backend focussed Software Developer? You could be progressing your career in a senior, hands-on role at a global Sports Trading business, earning substantial bonuses. What's in it for you: Salar

Salary: £200k + bonus Summary Join a sophisticated technology team in the London office of a prop trading house that places software development at the centre of business strategy. This team have the responsibility of a trading group and a core infra team. This role is for a senior engineer who is a

About Marex Marex 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 fo

Marex

About Marex Marex 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 fo

Senior Software Developer in Test - Appvia - UK Security Clearance eligibility required Location: London, UK (Hybrid - ~1 day per week in office) Contract: Permanent, Full-time Package: £70,000 - 80,000 + 10% Bonus + 10% Shares + Benefits (see more below) About Appvia Appvia is a specialist cloud, p

hackajob is collaborating with Barclays to connect them with exceptional professionals for this role. Embark on a transformative journey as a Software Engineer/Python Developer . At Barclays, our vision is clear – To design, develop and improve software, utilising various engineering methodologies,

WorldQuant develops and deploys systematic financial strategies across a broad range of asset classes and global markets. We seek to produce high-quality predictive signals (alphas) through our proprietary research platform to employ financial strategies focused on market inefficiencies. Our teams w

FX Digital

Build the future of Test Automation for Connected TV Role We're looking for a Mid-level Software Developer in Test to join our Quality Engineering team at FX Digital. This is a hands-on role for a genuinely self-driven engineer who cares deeply about the work they do and loves being part of a team.

Date live: 16/04/2026 Business Area: Corporate Digital Banking Area of Expertise: Technology Contract: Permanent Reference Code: JR-0000079083 Embark on a transformative journey as a Software Engineer/Python Developer . At Barclays, our vision is clear – To design, develop and improve software, util

Role: Software Developer (Python) - Up to £140,000 + Bonus + Package Salary: Up to £140,000 + Bonus + Package Location: London (Hybrid Working) Skills: Python as a main language This firm is an elite tech firm with high standards who have previously set tech world records. They are made up of some e

Marex

About Marex Marex 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 fo

Software Developer | £42,000 - £50,000 We're working with a fast-growing bespoke software innovator on this exciting opportunity. This is your chance to take a lead role in modernising a complex ecosystem of mobile and web applications as the business migrates legacy systems to a cutting-edge new ar

Software Developer / Engineer (C# .Net SQL) London onsite to £180k+ Are you a technologist with a record of academic achievement? You could be progressing your career working on complex and challenging systems at a Hedge Fund with over $17 billion under management. As a Software Developer you'll col

Role: Software Developer (Python) - Up to £140,000 + Bonus + Package Salary: Up to £140,000 + Bonus + Package Location: London (Hybrid Working) Skills: Python as a main language This firm is an elite tech firm with high standards who have previously set tech world records. They are made up of some e

Role: Software Developer (C++) – Up to £120,000 + Bonus + Package Salary: Up to £120,000 + Bonus + Package Location: London (Hybrid Working) Skills: C++ as a main language This firm is an elite tech firm with exceptionally high standards that has previously set world records in the technology space

Role: Software Developer (React) – Up to £120,000 + Bonus + Package Salary: Up to £120,000 + Bonus + Package Location: London (Hybrid Working) Skills: React as a main language (modern JavaScript / TypeScript) This firm is an elite technology company with exceptionally high standards , known for push

White Swan Data

Department: Engineering Location: London, UK Description About White Swan Data Technology is at the heart of our business and has produced consistent and significant results. We are a small but rapidly growing team of mathematicians, data scientists and software engineers constantly striving to refi