Job Specifications
Location: This position is located in Southern England (Wiltshire, Somerset, Bath & NES, Bristol, Dorset, Hampshire) with mostly remote working and a few days per month in our office in Wilton (near Salisbury). Overseas travel may be possible from time to time.
Salary: up to £45,000
Contract: Full Time, Perm
Role Summary
We are seeking a Full Stack PHP Developer to work on our web-based internal operations management system, to help increase the functionality and efficiency of HALO's operations. Built in-house in 2020 using Laravel, Bootstrap and PostgreSQL, and hosted in AWS, the system is the largest database of mine clearance, explosive ordnance disposal, and weapons and ammunition management operations in the world, spanning 30 countries, over 20,000 minefields and data on the daily productivity of 10,000 staff. The role is a fantastic opportunity to work with meaningful data, whose purpose is to improve the lives of communities affected by conflict.
In 2025, HALO published its Technology Strategy to increase the use of technology throughout our mine-clearance operations. This role is a critical element of delivering the roadmap to ensure cutting edge technology can be used to increase efficiency and to ensure data flows into the hands of users in remote areas.
Reporting to the Head of Information Management and GIS, we are looking for a developer with a self-starter mentality, who is comfortable working across the entire software development stack. The system is mission-critical; used by hundreds of users every day around the world and needs to work reliably in conflict-affected countries with poor internet connections.
The role would suit a person who is motivated to deliver tailored interfaces to help their colleagues to improve digital processes. The role requires attention to detail and pragmatic attitude; HALO is an organisation that focusses on solutions instead of problems - sometimes in rapidly changing environments; recent events in Syria, Gaza and Sudan have required us to react to new requirements. The successful candidate will be working with a large Postgres database, NoSQL JSON data, writing PHP in Laravel, designing interfaces with the Bootstrap framework and Blade views, writing native JavaScript, deploying code on servers, communicating with stakeholders and collaborating with colleagues that work in explosive ordnance disposal, weapons and ammunition management and landmine clearance.
Role Responsibilities
Creating new functionality and interfaces with Laravel, Bootstrap and JavaScript, to ensure flexibility for future requirements and scalability
Scripting database changes using Data Definition Language and rolling them out to ensure minimal downtime and integrity of existing data
Storing all changes in Git with descriptive commit messages
Tracking progress of work using Jira and Github issues
Writing unit tests to ensure coverage of key functionality
Reviewing pull requests of other developers
Selecting third-party packages that are well-supported and future-proof
Upgrading backend and frontend software as appropriate to ensure our systems are as secure and performant has possible
Testing all changes before releasing to production
Collaborating with other colleagues to design solutions based on stakeholder requirements
Documenting new features and system architecture in a concise way
Providing training sessions to system users on new features
Isolating and fixing bugs, making sure that existing functionality does not change
Responding to incoming questions from programmes
Requirements
Person specification
Resilient, with the ability to adapt in a complex, fast-paced, changing environment
Self-motivated with the ability to work with minimal supervision
Experience of delivering priority work within strict timelines
Required Experience
Experience with recent Laravel versions and PHP8
Frontend CSS/HTML frameworks such as Bootstrap
Ability to write native SQL: PostgreSQL, MySQL or SQL Server
Using JSON within SQL databases
Setting up webservers
Managing native JavaScript or jQuery with modules and NPM
Vite or Webpack
Git
Desirable Experience
Multi-tenanted codebases
Managing large Postgres databases with hundreds of tables and millions of rows
Working with PostGIS data
Leaflet Maps / Google Maps API
Docker
Experience working with RESTful APIs
Linux, Ubuntu, Apache/NGINX
AWS or Google Cloud Platform (GCP)
Writing tests, TDD/BDD
Working Charities or NGOs
Benefits
Benefits
25 days annual leave plus bank holidays
Non-contributory Life Assurance (3 x salary)
Private medical health cover
Emergency medical insurance when travelling overseas
Workplace Pension with up to 5% contributions matched by HALO
Occupational Health services including physiotherapy support and counselling support
Flexible working policy
To apply for this role please submit your CV and supporting statement before the closing date for applications which is 11th January 2026. If there is a sufficient calib
About the Company
The HALO Trust is the world’s largest humanitarian mine clearance organisation. We save lives and restore communities threatened by landmines and other weapons of war, such as cluster bombs, stockpiles of small arms and improvised explosive devices (IEDs).
Our work creates safe and secure environments in some of the world’s most vulnerable communities. We lift local families out of poverty by creating jobs for deminers and we prepare the way for development and long term stability.
Born out of a desire to help the people...
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