Junior software developer (c#/html/api) Work, Jobs in London, England (with Salaries)

Front Office Software Engineer
CMC Markets —London
- Full-time
- Computer Science
- Maths
- Mentoring
23h
Junior AI Agent Developer
Levocell Ltd —Slough
- £30,990.02 - £40,000.00 a year
- Full-time
- Computer Science
- Software troubleshooting
- Engineering
- Free parking
Quick apply
1h
kdb+ Engineer
Data Intellect —London
- Full-time
- Hybrid work
- Mentoring
- Software development
- Communication skills
- Paid training
- Referral programme
Quick apply
Staff Software Engineer (ML QA)
Graphcore —London
- Management
- Doctoral degree
- Computer Science
- Annual leave
- Employee assistance programme
Staff Software Engineer - Global KYC and Onboarding
Wise Australia Investments —London
- £111,000 - £145,000 a year
- Databases
- Mentoring
Intermediate Data Engineer
IDEXX —London
- £40,000 - £50,000 a year
- Full-time
- Hybrid work
- Computer Science
- Bachelor's degree
- No degree
Frontend Engineer - Java & Open Source (Private & FS)
Version 1 —London
- Full-time
- Mentoring
- Agile
- Communication skills
- Employee assistance programme
- Employee discount
Quick apply
Lead Software Engineer
Searchland —London
- £95,000 - £110,000 a year
- Hybrid work
- Mentoring
Quick apply
Avaloq CAPI Developer
Luxoft —London
- Maintenance
- English
- Analysis skills
2d
Technical Business Analyst
Aqovia —London
- Remote
- Analysis skills
- Mentoring
- Leadership
Senior Software Engineer
GRAVITY PROJECTS —London
- £85,000 - £90,000 a year
- Full-time
- Computer Science
- Software troubleshooting
- Engineering
- Free parking
- Annual leave
Quick apply
Senior QA Engineer
Cancer Research UK —London
- £50,000 - £55,000 a year
- Full-time
- Analysis skills
- Mentoring
- Agile
19h
Senior Full Stack Java Developer
Version 1 —London
- Full-time
- Agile
- SDLC
- Employee assistance programme
- Employee discount
Quick apply
Lead Developer
London Stock Exchange Group —London
- Full-time
- AI
- Leadership
Staff Engineer, Credit Technology
Ares Management —London
- Full-time
- Computer Science
- Databases
- Bachelor's degree
1d
Lead Software Engineer - Android
JPMorganChase —London
- Full-time
- Software troubleshooting
- English
- Continuous improvement
Senior Backend Software Engineer - Core Services
Radiant —London
- £50,000 - £95,000 a year
- Full-time
- Hybrid work
- DevOps
- Machine learning
- Mentoring
- Annual leave
Quick apply
TechOps Engineer (System Administrator)
Talos Global —London
- Full-time
- Bachelor's degree
- No degree
- Scripting
- Annual leave
- Employee stock ownership plan
Senior Full stack Java Developer
Solirius —London
- £55,000 - £80,000 a year
- Mentoring
- Agile
- Training & development
Quick apply
Lead Agentic AI Engineer
Avanade —London
- Computer Science
- Engineering
- Bachelor's degree
- Paid training

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Front Office Software Engineer

CMC Markets -
London

Apply Now

Job details

Full-time
23 hours ago

Qualifications

Technical troubleshooting
Performance tuning
Computer Science
Mentoring junior staff
Mathematics
Maths
Mentoring
Physics

Full job description

CMC Markets is seeking a Senior Low Latency Java Developer to join our Quantitative Strategies team within Pricing & Risk, working on our high-performance, high-frequency trading platform.

This is a hands-on role at the core of our market-making technology stack, where nanoseconds matter and engineering excellence is critical. You’ll design and build ultra-low latency pricing and risk systems that directly power our global trading operations.

If you thrive in performance-critical environments and want your work to have real market impact, we’d love to hear from you.

Please note that this is an onsite role that will require you to work within our London office (near Liverpool street) 5 days on site per week.

The Role

Ultra-Low Latency Engineering

Develop and optimise high-performance Java (21+) systems for pricing, risk and trading.
Build and enhance components within a low latency, high-throughput trading architecture.
Apply advanced concurrency, memory management and performance tuning techniques.

System Design & Ownership

Take responsibility for designing scalable, resilient and maintainable systems.
Contribute to architectural decisions across the trading and risk platform.
Build tooling to improve monitoring, maintenance and performance diagnostics.

Trading-Focused Collaboration

Work closely with Quants, Financial Engineering, Front Office and Business Operations.
Support live trading systems, troubleshooting time-critical production issues.
Contribute to the continuous evolution of our electronic trading infrastructure.

Mentorship & Technical Leadership

Provide guidance and mentorship to junior developers.
Champion engineering best practices, clean code principles and robust design patterns.

What You’ll Bring

Strong hands-on Java development experience within low latency financial systems.
Deep understanding of performance optimisation, concurrency and JVM internals.
Experience working on pricing, risk or electronic trading platforms.
Knowledge of FIX protocol, order routing and broker connectivity highly beneficial.
Strong mathematical and problem-solving mindset.
Experience across asset classes such as FX, Equities, Commodities or Derivatives preferred.
Ability to operate calmly in a fast-paced, front-office trading environment.
Experience mentoring engineers and influencing technical direction.
Minimum 2:1 degree in Computer Science, Mathematics, Physics or another numerate discipline.

Why Join CMC Markets?

Direct impact on global trading and risk systems.
Close proximity to the trading floor and real-time market operations.
High-visibility role within a performance-driven engineering culture.
Strong focus on continuous learning and technical excellence.
Clear progression opportunities into senior technical and leadership roles.

CMC Markets is an equal opportunities employer and positively encourages applications from suitably qualified and eligible candidates regardless of gender, sexual orientation, marital or civil partner status, gender reassignment, race, colour, nationality, ethnic or national origin, religion or belief, disability or age.

Apply Now

Refine Your Search

junior software developer (c#/html/api) jobs in london, england

Front Office Software Engineer

Junior AI Agent Developer

kdb+ Engineer

Staff Software Engineer (ML QA)

Staff Software Engineer - Global KYC and Onboarding

Intermediate Data Engineer

Frontend Engineer - Java & Open Source (Private & FS)

Lead Software Engineer

Avaloq CAPI Developer

Technical Business Analyst

Senior Software Engineer

Senior QA Engineer

Senior Full Stack Java Developer

Lead Developer

Staff Engineer, Credit Technology

Lead Software Engineer - Android

Senior Backend Software Engineer - Core Services

TechOps Engineer (System Administrator)

Senior Full stack Java Developer

Lead Agentic AI Engineer

I want to receive the latest job alerts for junior software developer (c#/html/api) in london, england

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