Senior Developer

LocationNairobi, International

LevelSenior

Posted2d ago

Engineering & Technology

Quick answer

UNEP is hiring a part-time Senior Developer to support the modernization of its web platforms as part of a Digital Portfolio Overhaul, focusing on complex technical issues and knowledge transfer.

Role: Senior Developer
Organization: UNEP - United Nations Environment Programme
Location: Nairobi, International
Level: Senior
Category: Engineering & Technology

The role

The United Nations Environment Programme (UNEP) is seeking a Senior Developer to provide technical support for the modernization of its web platforms as part of a Digital Portfolio Overhaul. The role involves addressing complex technical issues, enhancing the capacity of the Web Platforms team, and transferring knowledge to a designated replacement.

What you'll do

Provide senior technical advice and troubleshooting for complex issues affecting the corporate website, Starter Kit and priority web-platform migrations.
Support technical readiness of major releases and migrations, with particular attention to dependencies, security, performance, integrations and rollback requirements.
Coach the designated replacement through practical review of the principal systems, repositories, development workflows, deployment processes, architecture and outstanding technical issues.
Develop a practical Drupal technical training and operations manual for use by UNEP developers and the designated replacement, covering development workflows, administration, deployment, maintenance, upgrades and troubleshooting.
Develop and maintain comprehensive technical documentation for UNEP’s Drupal environment, including architecture, modules, themes, configurations, reusable components, integrations, APIs, search, deployment processes, dependencies, maintenance and troubleshooting procedures.

What it takes

A master’s degree in computer science, information systems, software engineering or other related field is required.
A minimum of five years of progressively responsible professional experience in web development, including substantial senior-level experience with PHP and Drupal is required.
Experience with Drupal architecture, themes, modules, configuration, reusable components, website migrations and modernization of enterprise web platforms is required.
Experience with JavaScript and modern front-end technologies, preferably React and Next.js.
Experience designing and integrating APIs and working with enterprise search technologies such as Elasticsearch or OpenSearch is required.
Strong knowledge of Git, code review and CI/CD deployment workflows is required.

What you'll bring

PHPDrupalJavaScriptReactNext.jsAPI design and integration

Frequently asked questions

Where is the job located?

The job is located in Nairobi, Kenya, and is part-time.

What is the compensation for this position?

Compensation is not specified in the job posting.

What are the key qualifications required for this position?

Key qualifications include a master’s degree in computer science or related field, at least five years of web development experience, and experience with PHP, Drupal, JavaScript, React, and Next.js.

How can I apply for this position?

Applications should be submitted by October 20, 2026, and can be sent to the UNEP - United Nations Environment Programme.

Is this position remote?

The job is based in Nairobi, Kenya, and is not remote.

How to apply

Apply directly on UNEP - United Nations Environment Programme's site. We link straight through — no resume parsing, no profile to fill out.

Apply now →

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