Senior Platform Engineer (Developer Experience)

Complexio; City Of London; On-site; GBP 70,000 - 90,000; Full time

Job summary

A pioneering AI joint venture is searching for a Senior Platform Engineer to standardise engineering practices and enhance developer workflows. The role requires hands-on DevOps expertise and strong communication abilities to create clear documentation and improve CI/CD processes. Ideal candidates will have a background in DevOps, CI/CD tools, and a collaborative mindset. Join this dynamic team and contribute to transformative AI solutions.

Benefits

Professional growth opportunities

Collaborative team environment

Continuous learning in a dynamic field

Qualifications

• Proven experience in DevOps, Platform Engineering, or Developer Productivity roles.
• Strong knowledge of CI/CD tools like GitHub Actions, GitLab CI.
• Experience with infrastructure-as-code in cloud environments.
• Excellent communication skills for documentation.
• Strong understanding of developer workflows.

Responsibilities

• Design and maintain end-to-end software development processes.
• Collaborate with teams for best practices adoption.
• Translate technical workflows into clear documentation.
• Evaluate tools to improve developer experience.
• Maintain up-to-date technical documentation.

Skills

DevOps expertise

CI/CD tools

Documentation skills

Infrastructure-as-code

Cloud environments

Containerisation

Visual documentation

Collaboration skills

Tools

GitHub Actions

GitLab CI

Terraform

AWS

Azure

Docker

Kubernetes

Lucidchart

Miro

Draw.io

Job description

Complexio’s Foundational AI platform automates business processes by ingesting and understanding complete enterprise data—both structured and unstructured. Through proprietary models, knowledge graphs, and orchestration layers, Complexio maps human-computer interactions and autonomously executes complex workflows at scale.

Established as a joint venture between Hafnia and Símbolo—with partners including Marfin Management, C Transport Maritime, BW Epic Kosan, and Trans Sea Transport—Complexio is redefining enterprise productivity through context-aware, privacy-first automation.

We are looking for a Senior Platform Engineer (Developer Experience) to establish and standardise engineering practices, improve developer workflows, and set standards for CI/CD and collaboration. This role combines hands-on DevOps expertise with a strong emphasis on clarity, documentation, and process design. The goal is to make our engineering organisation more efficient, consistent, and scalable so this person will work closely with engineering leads, product managers, and other stakeholders to ensure that our ways of working are well-documented, clear, and actionable.

Key Responsibilities

• Design, document and maintain end-to-end software development processes, including coding standards, branching strategies, testing, release management, and deployment.
• Collaborate with engineering managers, team leads, and product teams to gather insights and best practices, and ensure smooth adoption of tooling and practices.
• Translate complex technical workflows into clear, concise, and accessible documentation and visual aids (flowcharts, process maps, checklists, templates) to support understanding.
• Evaluate and introduce tools for developer experience improvement (e.g., feature flagging, local dev environments, code quality tools).
• Maintain a central repository (e.g., Confluence, Notion, or Git-based documentation), ensuring documentation is kept up-to-date and version-controlled.

Requirements

• Proven experience in DevOps, Platform Engineering, or Developer Productivity roles.
• Strong knowledge of CI/CD tools (GitHub Actions, GitLab CI, etc.).
• Experience with infrastructure-as-code (Terraform, Pulumi, etc.) and cloud environments (Azure, AWS, GCP).
• Familiarity with containerisation and orchestration (Docker, Kubernetes).
• Excellent communication skills with the ability to document technical standards for diverse audiences.
• Visual documentation skills (e.g., Lucidchart, Miro, Draw.io) are a plus.
• Strong understanding of developer workflows and pain points.
• Collaborative mindset and ability to work across teams.

Success Criteria

• Define and document engineering standards (branching, testing, code reviews, release process) that are widely adopted and referenced by the development team.
• Improve developer onboarding by providing clear, up-to-date documentation and streamlined setup processes.
• Documentation is consistently updated and reflects how teams actually work.
• Demonstrate improvements in lead time for changes, deployment frequency, and/or developer satisfaction.
• Reduced misunderstandings and inefficiencies due to lack of clarity.

Opportunities

• Join a pioneering joint venture at the intersection of AI and industry transformation.
• Work with a diverse and collaborative team of experts from various disciplines.
• Opportunity for professional growth and continuous learning in a dynamic field.