Junior Developer

Cobalt Consulting (UK) Ltd; Southend-on-Sea; On-site; GBP 25,000 - 35,000; Full time

Benefits offered by this job

Learning budget

Hybrid working

Mentoring from Technology Lead

Job summary

Cobalt is hiring a Junior Developer in Southend-on-Sea to gain practical exposure to AI and modern software development. You will build AI agents, automation workflows, and internal tools from day one, with direct mentoring from the Technology Lead and a budget for learning and development.

The role is hybrid, offering hands-on experience with production systems, APIs, and data integration to solve real business problems.

Qualifications

• Interest in using technology to solve practical problems and willingness to learn.
• Ability to work with Python and JavaScript / Node.js, SQL, REST APIs and JSON.
• Familiarity with Git and modern development practices.
• Right to work in the UK.

Responsibilities

• Build AI agents and automation workflows to support business processes.
• Develop APIs, backend services and internal tools using Python and Node.js.
• Create automation workflows with Make, Zapier and n8n, leveraging LLM-powered tools.
• Integrate third-party platforms and Microsoft 365 services; work with operational data.

Skills

Problem solving

Ownership

Learning agility

Tools

Python

JavaScript/Node.js

SQL

REST APIs

JSON

Git

Make

Zapier

n8n

Job description

Cobalt is working with a growing property management business in Southend-on-Sea that is investing in AI, automation and technology to improve how it operates.

The organisation is looking for a Junior Developer who wants practical exposure to AI and modern software development. You will have the opportunity to work with production systems from day one, alongside dedicated support and budget for learning and development.

The Junior Developer will work on a hybrid basis and receive direct mentoring from the Technology Lead, providing an opportunity to develop technical skills while solving real business problems.

The role and responsibilities

As Junior Developer, you will build AI agents, automation workflows, internal tools and integrations that support the organisation's day-to-day operations.

You will work closely with the Technology Lead and gain hands‑on experience across development, automation and operational data.

Your responsibilities will include:

• Building and orchestrating AI agents to automate business processes.


• Developing APIs, backend services and internal tools using Python and Node.js.


• Creating automation workflows using Make, Zapier, n8n and LLM-powered tools.


• Integrating third-party platforms, APIs and Microsoft 365 services.


• Working with SQL and operational data to support automation and reporting.

The skills needed

We are looking for a Junior Developer with an interest in using technology to solve practical problems and a willingness to develop their knowledge.

You will need:

• Working knowledge of Python and JavaScript / Node.js.


• An interest in AI agents, LLMs and automation.


• Working knowledge of SQL, REST APIs and JSON.


• Familiarity with Git and modern development practices.


• An ability to solve problems, learn and take ownership of your work.

Applicants must have the right to work in the UK.

This Junior Developer opportunity offers the chance to build practical experience in AI, automation and modern software development while receiving direct mentoring and exposure to production systems.