Senior C Developer

Description

You will be a hands-on engineer on a large datacenter migration that moves a long-running payments platform from UNIX/AIX to Linux (RedHat), with applications refactored for AWS.

Your main work is analysing, refactoring and consolidating C applications. Solid systems knowledge will help you reason about behaviour and work independently.

Beyond the migration, there is room to take on long-term BAU, project and client-integration work on the same platform.

The company has been operating for over two decades and works with leading brands across industries to build platforms and digital experiences.

Responsibilities

• Design, estimate and build technical solutions for medium and high complexity applications.
• Take part in every phase of the application development lifecycle.
• Work with stakeholders to clarify requirements, processes, architecture and priorities.
• Propose and promote industry standards, tools and practices, including DevOps, to produce well-built software.
• Suggest improvements and raise risks and issues linked to development work.
• Review work produced by other developers on the team.
• Pick up new technologies, practices and tools when they suit the project.
• Share what you learn from projects with others.
• Be accountable for other people's work and for assigning resources.
• Shape the thinking of the team, customers and suppliers.
• Make decisions that affect project and team outcomes.
• Propose and design solutions on your own.
• Explain solutions clearly to both technical and non-technical audiences.

Requirements

• 5+ years of hands-on software development, with proven depth in plain C.
• Strong UNIX skills on AIX and Linux (RedHat), including porting and refactoring applications from AIX to RedHat Linux.
• Shell scripting in Korn shell (ksh) and Bash for build, run and deployment across UNIX systems.
• Confident using the C build and debug toolchain: Make/Makefiles, gcc, gdb and core-dump analysis.
• Experience refactoring and consolidating applications, including redesign during a migration.
• Self-directed, able to deliver independently and own work from start to finish.
• Clear communicator who can explain solutions to technical and non-technical people.
• SQL and relational databases (DB2, Oracle), including embedded SQL such as ProC or ESQL/C in C code.
• Working knowledge of sockets, TCP/IP and inter-process communication for integrations and messaging.
• Awareness of porting issues between AIX (POWER) and Linux (x86): endianness, data type sizes and compiler differences.
• Payments or financial transaction processing knowledge, such as ISO 8583, card and transaction switching or PCI DSS.
• Git and GitHub, as the project is moving source control from SCCS to GitHub.
• Some exposure to Harness or a similar enterprise CI/CD tool such as Jenkins.
• Familiarity with AWS, since migrated applications will run in the cloud with databases hosted in a payments datacenter.
• Exposure to Linux administration, Docker or containers, or Terraform and infrastructure as code on the cloud target.
• Experience integrating with external clients and third-party systems.

Conditions

The company welcomes applicants from all backgrounds and selects people on merit, skills, qualifications and potential.

Benefits

• Career development: career coaching, global career opportunities, non-linear career paths, and internal programmes for management and technical leadership.
• Learning: complex projects, rotations, internal tech communities, training, certifications, coaching, online learning platform subscriptions, pass-it-on sessions, workshops and conferences.
• Health: a global internal wellbeing programme and access to wellbeing apps.
• Community: global internal tech communities, hobby clubs and interest groups, inclusion and diversity programmes, and events and celebrations.