Junior python Work, Jobs in Brentford, Gtl (with Salaries)

Helix Junior Quantitative Developer
iSAM Securities —London
- Maths
- Software development
Junior Software Engineer - Index Analytics and Technology
LegalAndGeneral —London
- Full-time
- Hybrid work
- Software development
- Employee discount
Quick apply
1h
Junior AI Software Engineer
Vodafone —London
- Full-time
- Computer Science
- Engineering
- No degree
7d
Junior AI Applied Python Backend Engineer
Code X London —London
- £30,000 - £35,000 a year
- Full-time
- Azure
- Computer Science
- Engineering
- Free parking
- Gym membership
Quick apply
11d
Junior Quantitative Researcher
Durlston Partners —London
- Up to £125,000 a year
- Doctoral degree
- Master's degree
- Machine learning
Python Developers
CGI —London
- Full-time
- DevOps
- AWS
- Mentoring
Quick apply
Junior Data Scientist & Marketing Effectiveness - Aug/September 2026 Start Date
Ekimetrics —London
- £40,500 - £47,000 a year
- Full-time
- Hybrid work
- Data analysis skills
- Machine learning
- Communication skills
- Annual leave
- Employee discount
Junior / Mid-level Front Office Python Engineer (R&D / Trading Systems)
Margo Conseil —London
- Computer Science
- SQL
- Analysis skills
AI Engineer (LLMs, Agents & Applied Data Science)
Talan —London
- Full-time
- Hybrid work
- Azure
- Machine learning
- Travel
- Employee assistance programme
Quick apply
Junior Algorithmic Developer, Analyst, London
Jefferies & Company, Inc. —London
- Full-time
- Computer Science
- Engineering
- Master's degree
Data and Impact Junior Professional
Palladium Group, Inc. —London
- Full-time
- Hybrid work
- Spanish
- English
- Presentation skills
6d
Junior Crypto Trading System Developer (Rust)
Kappa Lab —London
- Full-time
- Linux
- Python
Quick apply
AI Infrastructure Junior Architect
Accenture —London
- Full-time
- Computer Science
- Engineering
- Java
Data Scientist
Sage —London
- £69,000 - £74,000 a year
- Hybrid work
- Azure
- In-person
- AI
- Annual leave
8d
Junior Full Stack Software Engineer
Informed Solutions —London
- Hybrid work
- Azure
- Java
- AWS
- Gym membership
- Referral programme
Quick apply
Junior Implementation Engineer - London
Pierce Washington —London
- Full-time
- Hybrid work
- Computer Science
- Engineering
- Java
Quick apply
Full Stack Engineer (Java or Kotlin or Python) – VP
Citi —London
- Full-time
- Hybrid work
- Computer Science
- Engineering
- Bachelor's degree
- Annual leave
- Employee assistance programme
Software Engineer
Investa —London
- £60,000 - £85,000 a year
- Full-time
- Hybrid work
- System design
- Annual leave
Quick apply
6d
Graduate Technical Business Analyst, Data & AI, London
Acturis —London
- Full-time
- Hybrid work
- Bachelor's degree
- Python
Graduate Platform Engineer - Appvia Academy
Appvia —London
- £30,000 - £38,000 a year
- Full-time
- Hybrid work
- Computer Science
- DevOps
- Engineering
- Employee assistance programme
- Flexible schedule
Quick apply
7d

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Helix Junior Quantitative Developer

iSAM Securities
London

Apply Now

Job details

Qualifications

NumPy
UNIX
Mathematics
Statistical analysis
Maths
Physics
Software development
Multidisciplinary collaboration

Full job description

iSAM is an innovative, financial technology firm specialising in quantitative trading, comprised of iSAM Funds and iSAM Securities.

iSAM Securities regulated by the FCA, SFC, and CIMA registered, is a leading algorithmic trading firm and trusted electronic market maker, providing liquidity, technology and prime services to institutional clients and trading venues globally. The firm offers full-service prime brokerage and execution via its cutting-edge proprietary technology, as well as market leading analytics, cleared through the group’s bank Prime Brokers.

iSAM Funds is an alternative asset manager specialising in systematic investing. Each strategy is unique, provides a specialist quantitative approach and is designed to deliver highly diversifying absolute returns for institutional portfolios.

About the Role:

iSAM Helix is an Equities Statistical Arbitrage (StatArb) business line within iSAM Funds, which trades 24/6 globally. iSAM Helix has been live since 2021 and continues to evolve rapidly as part of an ambitious roadmap focused on expanding strategy breadth and capacity. Helix consists of four groups: Research, Quantitative Development, Technology and Data. The project is highly collaborative; the team are looking for a Quantitative Developer capable of working on all aspects of the trading platform - research, development, and live trading platforms. Technology is a front-line function within Helix, playing a critical role in systematic trading. Both the research platform and the production trading system are built on top of custom implementation of high-performance python graph (DAG). The same graph framework is being used across the whole environment – research and back testing, live trading, analytics, risk, position keeping and P&L.

Responsibilities:
The opportunity would involve tackling complex problems in which you’d be a key part
of team working on a large breadth of challenges, including the following:

Develop and support a complex quantitative StatArb strategies involving large-
scale data processing, sophisticated statistical modelling, portfolio construction
and highly optimised execution.
Build and maintain systems handling highly diversified equity portfolios.
Monitoring transaction costs and behaviour of a high turnover strategy.
Process and analyse vast historical datasets for research and back-testing,
alongside real-time, tick-level market data for live trading.
Contribute to the design and use of a high-performance, graph-based (DAG)
framework enabling concurrent data processing for research and production.
Monitor and manage execution quality, transaction costs and market risks
arising from changing market regimes and small statistical effects.
Work closely with quantitative researchers to enhance tooling, frameworks and
shared feature libraries.
Take ownership of system components in a fast-paced, agile environment,
working both independently and collaboratively as required.
Participate in live trading support, including interaction with orders and brokers
as part of a rota (FCA certification required).

Qualifications:

3 years’ experience in a technical role within the finance industry (investment
bank, hedge fund and associated firms)

Degree in Mathematics or Physics preferred; other STEM subjects such as
Computer Science will also be considered.
Python: Strong software developer with in-depth knowledge and experience.
Numpy (including numba): in-depth knowledge is required.
Strong knowledge of Unix systems (processes, memory, I/O).
Deep understanding of statistical methods, numerical optimisation and equity
market microstructure.
Experience working with graph-based (DAG) data processing frameworks.

Personal Attributes:

Highly analytical with a strong sense of ownership and accountability.
Comfortable tackling complex, ambiguous problems with limited oversight.
Collaborative mindset with the ability to work closely with researchers, technologists and trading operations.
Calm and reliable under pressure, particularly in live trading environments.

Key Outcomes:

Delivery of robust, scalable and high-performance systems supporting live trading.
Tangible improvements to research productivity, execution quality and platform stability.
Technical excellence and system ownership.

Apply Now

Refine Your Search

junior python jobs in brentford, gtl

Helix Junior Quantitative Developer

Junior Software Engineer - Index Analytics and Technology

Junior AI Software Engineer

Junior AI Applied Python Backend Engineer

Junior Quantitative Researcher

Python Developers

Junior Data Scientist & Marketing Effectiveness - Aug/September 2026 Start Date

Junior / Mid-level Front Office Python Engineer (R&D / Trading Systems)

AI Engineer (LLMs, Agents & Applied Data Science)

Junior Algorithmic Developer, Analyst, London

Data and Impact Junior Professional

Junior Crypto Trading System Developer (Rust)

AI Infrastructure Junior Architect

Data Scientist

Junior Full Stack Software Engineer

Junior Implementation Engineer - London

Full Stack Engineer (Java or Kotlin or Python) – VP

Software Engineer

Graduate Technical Business Analyst, Data & AI, London

Graduate Platform Engineer - Appvia Academy

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