Martech Engineer — AI, Data & Marketing Automation

Harnham - Data and Analytics Recruitment; Greater London; Hybrid; GBP 50,000 - 61,000; Full time

Benefits offered by this job

Bonus scheme

Hybrid working

Wellbeing allowance

Enhanced parental leave

Study days

Volunteering days

Job summary

Harnham is seeking a MarTech Engineer in London/Brighton, combining software, data, AI, and digital marketing skills to develop innovative tools used by clients and internal teams. The role sits at the intersection of engineering and marketing technology, with opportunities to shape automation and data-driven products.

You will work on API integrations, data pipelines, and AI-enabled automation, collaborating with SEO, paid media, content, and analytics teams to deliver impactful solutions.

Qualifications

• Strong commercial experience with JavaScript/TypeScript and Node.js.
• Experience building API integrations and data pipelines.
• Experience with cloud platforms (ideally GCP).
• Understanding of digital marketing channels (SEO, paid search, content, or paid social).
• Ability to communicate effectively with both technical and non-technical stakeholders.

Responsibilities

• Design, build, and maintain scalable tools across data, automation, and AI initiatives.
• Develop proprietary products and internal tools.
• Build API integrations and data pipelines.
• Maintain and improve existing applications.
• Collaborate with SEO, paid media, content, and analytics teams.
• Identify technical solutions to business challenges.
• Support AI-driven products and automation workflows.

Skills

JavaScript

TypeScript

Node.js

APIs

Cloud platforms

Serverless

SEO

Paid media

Tools

BigQuery

ETL/ELT

LangChain

CrewAI

React

Job description

Harnham is seeking a MarTech Engineer in London/Brighton, combining software, data, AI, and digital marketing skills to develop innovative tools used by clients and internal teams. The role sits at the intersection of engineering and marketing technology, with opportunities to shape automation and data-driven products.

You will work on API integrations, data pipelines, and AI-enabled automation, collaborating with SEO, paid media, content, and analytics teams to deliver impactful solutions.