Software Developer C and Linux

System Recruitment; Southampton; Hybrid; GBP 60,000 - 65,000; Full time

Job summary

System Recruitment is seeking an experienced C/Linux Software Developer for a hybrid role accessible from the Southampton area. The position focuses on building and maintaining compact C code on Linux, integrating authentication components, and supporting deployment tooling.

The ideal candidate has hands-on experience with Autotools, LDAP/AD, and cloud/automation tooling, with readiness to work from an office near Lymington under a hybrid model.

Qualifications

• Experience developing application code in C on Linux.
• Working with Linux build systems, mainly Autotools.
• Experience with identity/authentication technologies such as LDAP/AD.

Responsibilities

• Develop and maintain C/Linux software components.
• Collaborate on design and security considerations for authentication modules.
• Support automated deployment and cloud provisioning workflows.

Skills

C

Linux

Autotools

LDAP

Active Directory

Terraform

OpenTofu

API

Tools

OpenLDAP

Terraform

Job description

A leading tech company specialising in data management have an immediate requirement for an experienced C/Linux Software Developer.

Key Skills: Software Developer, Software Engineer, C, Linux, Autotools, LDAP, Active Directory, Terraform, OpenTofu, API

Location: Hybrid but must be able to reach the office near Lymington - SO41 9AZ

Salary: £60,000 - £65,000 + benefits

Essential Skills

• Experience developing application code in C on Linux
• Working with Linux build systems, (mainly Autotools)

Identity & Authentication knowledge:

• LDAP / Active Directory integration (e.g. via OpenLDAP's libldap)
• OpenID Connect / OAuth 2.0 (e.g. via liboauth2)
• Understanding of credential handling, token validation, and session management
• Awareness of identity-related security concerns (trust boundaries, configuration errors, credential leakage)

Automated Deployment:

• Experience with automated provisioning (e.g. Terraform/OpenTofu)
• Familiarity with common cloud platforms and virtualisation environments (e.g. AWS, Azure, OpenStack, VMware)
• Exposure to cloud-init or equitant system initialisation frameworks and how they operate at a low level
• Understanding of secure configuration delivery and deployment auditability of newly provisioned systems

API Design & Implementation (maybe):

• Experience / Familiarity with:
• Working with OpenAPI (Swagger) specifications to define service interfaces
• Implementing APIs in C or similarly low-level environments, without reliance on full-stack frameworks
• Designing for defensive input handling and error management

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