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AgileGrid Solutions

Senior Python Engineer

United Kingdom
£100k/yr
Posted about 12 hours ago
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About The Company

Harnham is a leading technology company based in Greater London, renowned for its innovative solutions in digital advertising and data-driven marketing. With a strong focus on leveraging cutting-edge technology to optimize advertising performance, Harnham has established itself as a trusted partner for brands seeking to maximize their digital reach. The company prides itself on fostering a collaborative and dynamic work environment, encouraging continuous learning and professional growth. Committed to excellence and innovation, Harnham is dedicated to developing impactful products that address complex challenges in the digital advertising ecosystem.

About The Role

Harnham is seeking a highly skilled Senior Software Engineer to join their team and take a leading role in developing and scaling a high-impact ad-fraud prevention platform. This position is ideal for a technically proficient individual who thrives in a fast-paced environment and is passionate about building robust, scalable systems. As a senior contributor, you will be responsible for owning critical components of the platform, ensuring high-quality code, and driving technical excellence. The role offers a unique opportunity to influence the direction of the company's core product, working closely with cross-functional teams to deliver innovative solutions that combat ad fraud and enhance advertising integrity.

Qualifications

Reasons to use Rodeo

I’m in my final year doing Economics and I don’t know whether to apply for grad schemes now or do a masters first. What do you think?

Honest answer — it depends on where you want to end up. A lot of top grad schemes (Big 4, civil service, banking) don’t need a masters. Let’s look at the ones you’d be competitive for now, and we can decide if a masters actually adds anything.

Also worth knowing: most autumn 2026 applications are open now. Timing matters more than you think.

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Graduate Consultant — 2026 Scheme

PwC·London, UK
£35,000/yr

Why you're a good match

Strong

Your economics background and your summer at a regional bank line up with what PwC looks for on the consulting scheme. Applications close in four weeks.

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Why you're a good match

You’ve got the grades and the economics background, and your bank internship is exactly the experience this scheme looks for. Apply soon — deadlines close within the month.

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Strong

Experience fit

Your summer at the bank plus your econometrics coursework map directly to the day-one responsibilities on this scheme — client modelling, market briefings, and deal support.

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Only hits

No noise. No "maybe this fits." Just roles with a clear explanation of why they're right — and where to focus when applying.

  • Extensive experience in software engineering, particularly in building scalable and high-performance systems.
  • Proficiency in modern programming languages such as Java, Python, or Go.
  • Strong understanding of distributed systems, microservices architecture, and cloud computing platforms like AWS or Azure.
  • Experience with data streaming and processing technologies such as Kafka, Spark, or similar.
  • Proven track record of designing and implementing secure, reliable, and maintainable code.
  • Excellent problem-solving skills and the ability to troubleshoot complex technical issues.
  • Strong communication skills and the ability to collaborate effectively within a team environment.
  • Previous experience in ad-tech, fraud detection, or related fields is a plus but not mandatory.

Responsibilities

  • Design, develop, and maintain scalable software components for the ad-fraud prevention platform.
  • Own key features and modules, ensuring high quality, performance, and security standards.
  • Collaborate with product managers, data scientists, and other engineering teams to deliver innovative solutions.
  • Implement best practices for code quality, testing, and deployment to ensure reliable software delivery.
  • Participate in code reviews, technical discussions, and knowledge sharing sessions.
  • Identify opportunities for system improvements and contribute to the continuous enhancement of the platform.
  • Mentor junior team members and foster a culture of technical excellence.
  • Stay updated with the latest industry trends and incorporate relevant advancements into the product development process.

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Benefits

  • Harnham offers a competitive salary package of up to £100,000, reflecting the level of expertise and experience.
  • The role provides a flexible hybrid working arrangement, with two days in the London office to promote collaboration and team engagement.
  • Employees benefit from comprehensive health insurance, pension contributions, and generous holiday allowances.
  • The company supports ongoing professional development through training programs, conferences, and certifications.
  • Additionally, Harnham fosters a positive work environment that encourages innovation, recognition, and work-life balance, ensuring employees feel valued and motivated in their roles.

Equal Opportunity

Harnham is an equal opportunity employer committed to creating an inclusive environment for all employees. They do not discriminate based on race, ethnicity, gender, age, disability, sexual orientation, religion, or any other characteristic protected by law. The company values diversity and believes that a varied workforce enhances creativity, innovation, and overall success. All qualified candidates are encouraged to apply, and Harnham is dedicated to providing a fair and equitable recruitment process.

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Skills

Python
Java
Go
Distributed Systems
Microservices Architecture
AWS
Azure
Kafka
Spark
Software Engineering
Ad-fraud Prevention
Data Streaming
Problem Solving
Code Review
Mentoring
System Design

Location

United Kingdom

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