Principal Software Engineer

Role overview

Rocket Software is looking for a Principal Software Engineer to contribute to the design, build, and support of strategic products for IBM z/OS mainframes. In this position, you will serve as a dependable technical authority, taking responsibility for important components across one or more products, while working with a globally distributed group of engineering specialists.

You will work with other engineers to shape, improve, and maintain a leading portfolio of system-level products. The role is ideal for someone with a strong grasp of modern programming languages, experience in enterprise software development, and a real interest in IBM mainframe environments. You will also be expected to keep learning, share expertise, and help raise the technical bar across the team.

Key responsibilities

• Take ownership of shared software components used across multiple Rocket products, with a focus on scale, stability, and long-term supportability.
• Lead the technical direction for shared platform capabilities, including design decisions and engineering standards across teams.
• Work as a go-to expert who supports other engineers through mentoring, training, documentation, and practical guidance on using shared components effectively.
• Partner across product and engineering groups to deliver strategic solutions, especially in modernization efforts and middleware layers.
• Spot recurring technical issues and improve platform performance, capability, and developer experience proactively.

Required experience and skills

• Strong hands-on proficiency in C, C++, and Java.
• Working familiarity with IBM mainframe operating systems, particularly z/OS.
• Background in building, maintaining, or supporting complex software systems that must perform at a high level.

Preferred experience

• Experience programming in High Level Assembler (HLASM).
• Exposure to ISPF, REXX, and DTL.
• Technical understanding of major mainframe subsystems such as IMS and CICS.

What the role calls for

The right candidate will bring sound technical judgment, an architectural approach to problem-solving, strong attention to detail, and enthusiasm for working in a technically deep and highly collaborative environment. You should also be proactive about researching, assessing, and applying new technologies, processes, and engineering practices.

About the Perth office

Rocket Software’s Perth office is based in the Elizabeth Quay precinct, overlooking the Swan River, and sits at the centre of the city’s waterfront and business district. The office continues to expand, reflecting the company’s long-term commitment to the region. This year also marks the launch of the Next Gen Program, which brings ten recent graduates into the team and strengthens the office’s focus on developing emerging engineering talent. The location, growth, and early-career development focus make Rocket Perth an energetic and appealing place to work.

Equal opportunity and workplace commitments

Rocket Software Inc. is committed to building a diverse workplace and is an equal opportunity employer. All qualified candidates will be considered without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The company also follows fair employment practices relating to citizenship and immigration status.

Hiring process and accommodation

As part of its commitment to a safe and trustworthy workplace, Rocket includes background and reference checks during hiring.

Rocket also provides reasonable accommodation for applicants with physical or mental disabilities. If you need assistance or accommodation during the hiring process, you may call 781-577-4321 or email people@rocketsoftware.com. Requests are reviewed individually.

Additional note

If you enjoy ambitious growth and working with energetic, high-performing people, this opportunity may be a strong fit for you.