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Rocket Software

Modernizes IBM legacy systems with software

Senior Software Engineer - Mainframe

Full-TimeUpdated on 10/15/2026
€49k - €83.3k/yr
Senior
Bachelor's
Vilnius, Vilnius City Municipality, Lithuania
HybridChoose your own hybrid/remote work model.
Software EngineeringSystems Software Engineering

About the job

Requirements
  • Experience in software engineering at a senior level.
  • A proven track record of software development in the real world.
  • Proficiency in IBM z/OS Assembler (HLASM) development and debugging.
  • Proficiency in C/C++ development and debugging.
  • A bachelor's degree or equivalent.
Responsibilities
  • Design, develop, troubleshoot, and debug software features, functionality, and enhancements; correct defects; and create new products.
  • Develop Enterprise Program Products for monitoring IBM z/OS Storage environments.
  • Determine software compatibility with hardware and influence software design in relation to hardware.
  • Review designs and provide feedback.
  • Own the design and development of features within the assigned component.
  • Identify and practically solve for anti-patterns.
  • Understand how work aligns with high-level use cases and team deliverables.
  • Define components that fit into an architecture, at a scope larger than a feature but smaller than a product.
  • Describe and defend design decisions for components owned by the team.
  • Optimize software design to leverage platform capabilities.
  • Act as the technical subject matter expert for a product domain.
  • Quantify and communicate work estimates and risks to direct management.
  • Handle multiple competing priorities with minimal help.
  • Understand features as a whole and break larger stories and features into tasks.
  • Take ownership of customer issues and work with Support and Sales Engineers to resolve field questions and issues.
  • Discuss customers' broader concerns and problems beyond immediate technical issues.
  • Teach and grow junior team members.
  • Ensure tasks are completed thoroughly, with work tested, unit tested, documented, and ready for customers.
  • Create plans to resolve identified problems and prevent recurrence.
  • Follow through on tasks and reliably deliver expected work products and outcomes.
  • Impart a sense of urgency on junior team members.
Desired Qualifications
  • Familiarity with IBM z/OS operating system environments and facilities, including JES and ISPF.
  • Familiarity with IBM z/OS Storage Management.
  • Familiarity with IBM High Level Assembler (HLASM) development and debugging.

About the company

Rocket Software helps large organizations keep their older IBM-based systems running while adding modern capabilities. It provides software and services that modernize legacy environments, especially IBM i and IBM Z, through application modernization, process automation, data management, and DevOps. Customers typically buy software licenses or subscribe to services and pay for consulting and support. The products work by integrating with existing mainframe and midrange systems to improve performance, security, and functionality while enabling automation and better data handling. What sets Rocket Software apart is its focused specialization in IBM platforms and legacy systems, offering a broad mix of licenses, subscriptions, and professional services to extend the life of critical infrastructure and reduce operational risk. The company aims to help clients stay competitive by modernizing their core IT, lowering risk, and improving efficiency without replacing their established systems.

Company Size

1,001-5,000

Company Stage

Debt Financing

Total Funding

$382.6M

Headquarters

Waltham, Massachusetts

Founded

1990

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Simplify's Take

What believers are saying

  • September 23, 2026 EVA expansion added PlanGuard and global pilots across regulated industries.
  • September 9, 2026 z/Assurance targets urgent IBM Z vulnerability, patch, and quantum exposure.
  • Vertica plus HPE GreenLake supports sovereign data lakehouses for AI workloads.

What critics are saying

  • IBM Z talent shortages worsen; Rocket's partner-only MultiValue referrals signal services bottlenecks.
  • Bain Capital exit pressure and 2026 trademark disputes distract management and inflate legal costs.
  • If IBM mainframe workloads shrink faster, Rocket's core modernization market erodes.

What makes Rocket Software unique

  • Rocket owns IBM i, IBM Z, MultiValue, and Vertica modernization workflows across hybrid estates.
  • EVA and z/Assurance add governed AI and compliance controls for mainframe operations.
  • HPE Unleash AI partnership, launched June 18, 2026, embeds Vertica into AI infrastructure.

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Benefits

Health Insurance

Life Insurance

Disability Insurance

Unlimited Paid Time Off

401(k) Retirement Plan

401(k) Company Match

Professional Development Budget

Conference Attendance Budget

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

-1%
Yahoo Finance
Oct 13th, 2026
Rocket Software acquires Geniez AI to speed up agentic AI for mainframes

Rocket Software has acquired Geniez AI, a generative AI company that builds AI agents to monitor live mainframe systems, diagnose incidents, and run workflows using natural language. The deal was announced on October 13, 2026. Financial terms were not disclosed. Geniez AI's technical leadership and engineering team will join Rocket. They will help develop new features for Rocket EVA, the company's agentic AI platform for core systems. Rocket says the deal will help close the mainframe skills gap and cut operational complexity. "This is about continuing to transform what is possible on the mainframe," said Milan Shetti, president and chief executive officer of Rocket Software. Rocket Software is owned by Bain Capital Private Equity.

TechDay
Oct 6th, 2026
Rocket expands mainframe EVA AI platform with PlanGuard.

Rocket expands mainframe EVA AI platform with PlanGuard. Wed, 7th Oct 2026 (Today) Rocket Software has expanded its EVA agentic AI platform for mainframe systems and introduced a new security layer called PlanGuard. The update extends EVA into a broader range of operational tasks on core systems, including diagnostics, security, batch processing, application management and data work. Organisations in financial services, government, insurance, retail and telecommunications are already piloting the platform. EVA is designed to let AI agents analyse operational data and automate selected tasks within policies set by enterprise users. PlanGuard adds a control point between AI decision-making and system execution, using identity and policy checks to limit what an agent can access and do on a mainframe. Rocket is targeting a longstanding problem for large organisations that still rely on mainframes for core workloads: a shortage of specialist skills. In research commissioned from Hanover Research, 81% of financial services IT leaders said the mainframe skills gap was very or extremely significant, while 87% said AI would help address it over the next two years. Another Hanover finding cited by Rocket found that 94% of financial services IT leaders rank improving IT operations with AI as a high or top priority. EVA uses natural language interfaces to help staff work through operational issues that have often required specialist knowledge, multiple tools and manual investigation. Rocket outlined several areas where customers are testing the software. In operations and diagnostics, EVA is being used for job failure pattern analysis, dashboard and KPI generation, workflow automation, financial reporting analysis, online banking application optimisation, and queue and backlog analysis in IBM CICS environments. In security, the focus includes vulnerability detection, compliance work, patch management and identifying risks linked to post-quantum cryptography. For batch processing, the platform is intended to help teams monitor performance against service-level agreements, identify critical failures and investigate root causes more quickly. Application and configuration management is another target area, including analysis of high CPU use and degradation affecting IBM Db2 data sharing, buffer pools and cache performance. The latest EVA release also supports Rocket's broader aim of unified enterprise data access and output management. EVA is model-agnostic and uses a standards-based method to connect to z/OS data. Rocket says that approach is intended to simplify access to operational and enterprise data while keeping governance controls in place. Control layer PlanGuard is central to Rocket's pitch to customers seeking tighter oversight of AI activity in sensitive environments. The software is intended to keep AI-driven actions within approved boundaries, while logging activity for audit and allowing human oversight where needed. Mainframes remain deeply embedded in sectors such as banking, insurance and government, where organisations often want to modernise operations without disrupting systems that handle high-value or regulated workloads. That creates an opening for suppliers promising practical AI uses in established infrastructure rather than only in newer cloud environments. Rocket, which is privately held and backed by Bain Capital Private Equity, says it serves more than 13,500 customers and works with 850 partners. The business focuses on software for IT modernisation across mainframe, infrastructure, applications and data environments. "Enterprises have relied on the mainframe to run their mission-critical workloads for decades," said Milan Shetti, President and Chief Executive Officer of Rocket Software. "AI promises to unlock even more value from these environments, but only if enterprises can deploy it securely and without disruption. We're helping customers apply agentic AI to mission-critical systems with speed, confidence and control, closing the skills gap and putting that expertise within reach of every enterprise team," Shetti said.

Associated Press
Sep 23rd, 2026
Rocket Software launches governed agentic AI platform for mainframe operations

Rocket Software has expanded its EVA agentic AI platform for mainframe systems, introducing new governance and automation capabilities for mission-critical operations. The platform now includes Rocket PlanGuard, a security layer that provides policy controls between AI reasoning and system execution whilst maintaining auditability. According to a Hanover Research study commissioned by Rocket, 81% of financial services IT leaders report significant mainframe skills gaps, whilst 87% believe AI will help address this within two years. EVA enables teams to use natural language to tackle operational challenges across diagnostics, security, batch processing, and application management. The platform connects to z/OS data sources and provides governed access to mainframe resources. Global organisations across financial services, government, insurance, retail, and telecommunications are participating in EVA pilots. The company reports customers can move from installation to actionable insights within days.

GlobeNewswire
Sep 22nd, 2026
Rocket Software named as a Major Player in IDC marketscape(r) for Intelligent Content Services.

Rocket Software named as a Major Player in IDC marketscape(r) for Intelligent Content Services. WALTHAM, Mass., Sept. 22, 2026 (GLOBE NEWSWIRE) - Rocket Software, a global technology leader in modernization software, today announced it has been named a Major Player in the IDC MarketScape: Worldwide Intelligent Content Services 2026 Vendor Assessment (doc #US54137426, September 2026). We believe this recognition highlights Rocket Software's approach to helping enterprises modernize how they manage, govern and access critical content across mainframe, hybrid and cloud environments while building a trusted foundation for AI. As enterprises accelerate AI initiatives, access to trusted enterprise content is becoming critical to turning those investments into business value. Yet, much of that information remains distributed across complex systems and applications that continue to support business operations. By bridging content across mainframe, distributed, and cloud environments, Rocket(R) ContentEdge(TM) helps customers unlock the value of their content by connecting these environments and bringing greater intelligence, automation and governance to content workflows at scale without requiring disruptive migrations. "Most enterprises can't get AI to access their most valuable content, because that content can't simply be moved," said Michael Curry, President, Data Modernization Business Unit, Rocket Software. "It lives across archives, mainframe systems, ERP systems, and records repositories with strict requirements around how that information is accessed and governed. ContentEdge helps make that content available to AI where it already lives - preserving existing access controls and keeping every answer traceable back to the source. We believe this recognition reflects our commitment to helping customers overcome these challenges, particularly for organizations operating in highly regulated environments." "The content services market is being reshaped by AI-driven automation, hybrid cloud modernization, and the need for tighter governance. Rocket Software's recognition as a Major Player in this IDC MarketScape reflects its ability to modernize mainframe-adjacent content workloads while meeting enterprise security requirements," said Amy Machado, Research Director, Content and Knowledge Discovery Strategies at IDC. How ContentEdge Prepares Enterprise Content for AI AI assistants and agents are now consumers of enterprise content alongside employees and applications. For organizations targeting complex AI use cases that depend on unstructured data, this shifts the requirement: information has to be managed and made accessible in ways that support insight at scale, not just storage and retrieval. That is difficult against the reality of most estates - decades of content spread across repositories, archives, and business applications, which leaves AI systems without the reliable, contextual information they need to generate insights, automate tasks, and support decision-making. ContentEdge encompasses Rocket Software's content services portfolio, including Mobius(R), Rocket(R) Cypress, EOS(R), Rocket(R) Content Automation and Audit & Analytics Services. The platform enables enterprises to address these challenges by transforming enterprise content from information stored across disparate systems into a more connected and actionable business asset. Rocket Software continues to invest in helping organizations manage, govern, and derive greater value from enterprise content. ContentEdge combines intelligent content management, automation, information governance, and conversational AI capabilities to help customers modernize content workflows, improve access to critical information, and support compliance requirements while preserving existing technology investments. About Rocket Software Rocket Software is a global technology leader in modernization and a partner of choice that empowers the world's leading businesses on their IT and mainframe modernization journeys, spanning core systems to the cloud. Trusted by more than 13,500 customers and 850 partners, and with more than 3,000 global employees, Rocket Software enables customers to maximize their data, applications, and infrastructure to deliver critical services that power our modern world. Rocket Software is a privately held U.S. corporation headquartered in the Boston area with centers of excellence strategically located throughout North America, Europe, Asia, and Australia. Rocket Software is a portfolio company of Bain Capital Private Equity. About IDC MarketScape: IDC MarketScape vendor assessment model is designed to provide an overview of the competitive fitness of technology and service suppliers in a given market. The research utilizes a rigorous scoring methodology based on both qualitative and quantitative criteria that results in a single graphical illustration of each supplier's position within a given market. IDC MarketScape provides a clear framework in which the product and service offerings, capabilities and strategies, and current and future market success factors of technology suppliers can be meaningfully compared. The framework also provides technology buyers with a 360-degree assessment of the strengths and weaknesses of current and prospective suppliers Frequently Asked Questions What did Rocket Software announce? Rocket Software was named a Major Player in the IDC MarketScape: Worldwide Intelligent Content Services 2026 Vendor Assessment. We believe the recognition reflects Rocket's approach to helping enterprises manage, govern and access critical content across complex environments while preparing that information to support AI initiatives. What is Rocket(R) ContentEdge(TM)? Rocket ContentEdge is the evolution of Rocket Software's Content Services portfolio. It's designed to help organizations unlock value from unstructured data and accelerate data modernization across hybrid environments without disrupting existing operations. Why is enterprise content a challenge for AI initiatives? Much of an organization's most valuable content sits across archives, mainframe systems, business applications and records repositories, often subject to existing access, retention and residency requirements. ContentEdge helps organizations make that information available for AI where it already lives, preserving existing controls and avoiding the need to move or duplicate sensitive content. How does ContentEdge help organizations prepare enterprise content for AI? ContentEdge helps organizations connect content across disparate systems and turn unstructured information into a more accessible, governed and actionable business asset. This gives AI-powered applications, assistants and agents access to the reliable, contextual information they need while helping organizations maintain governance, security and compliance. How does Rocket ContentEdge help organizations maintain governance as they adopt AI? ContentEdge helps organizations apply AI to enterprise content while maintaining the governance, security and compliance controls already in place. Capabilities such as built-in redaction, reuse of existing access controls, and in-place data connections help organizations make sensitive content available to AI without unnecessarily moving or duplicating information.

TechDay
Sep 10th, 2026
Rocket launches z/Assurance for IBM Z risk & compliance.

Rocket launches z/Assurance for IBM Z risk & compliance. Thu, 10th Sep 2026 (Today) Rocket Software has launched Rocket z/Assurance, a risk and compliance management portfolio for IBM Z environments. It is aimed at organisations running critical systems on mainframes and across hybrid estates. The portfolio brings together tools to identify vulnerabilities, check security controls, monitor compliance readiness and assess remediation priorities across IBM Z systems. It also covers hybrid environments that include mainframes, reflecting how many large organisations run their infrastructure. The launch comes as security teams face faster discovery and exploitation of vulnerabilities linked to artificial intelligence tools. Rocket Software also pointed to longer-term concerns about quantum computing and its implications for cryptography and data protection. A commissioned study by Researchscape highlighted the scale of concern among technology leaders. According to the findings, only 24% of IT leaders were extremely confident in their organisation's ability to address mainframe vulnerabilities over the next year. Portfolio scope Rocket z/Assurance includes a set of products focused on different parts of security and compliance operations in IBM Z environments. These include tools for code-level vulnerability analysis, continuous monitoring of new exposures, visibility into missing security patches, automated policy adherence checks, and reviews of cryptographic inventories and quantum-related exposure across z/OS, z/VM and Linux on Z. The portfolio is intended to give security and IT teams real-time visibility into risk and a clearer basis for remediation decisions. Rocket Software is also positioning the software as a way to produce evidence for audits and broader governance reviews. One part of the announcement concerns planned agentic artificial intelligence functions. Rocket Software said it intends to add AI features to help teams interpret findings, prioritise fixes and access remediation guidance in plain language. The planned addition reflects a broader shift in cybersecurity operations, as suppliers use AI to reduce manual triage while also responding to the security threats the technology creates. In heavily regulated environments such as banking, government and large-scale enterprise IT, the need to show that controls are working remains central to buying decisions. IBM Z systems still sit at the core of many transaction-heavy industries and often form part of wider hybrid environments rather than standalone estates. That makes governance and visibility harder, particularly when security teams must track risk across a mix of older and newer platforms. Rocket Software has long focused on tools for mainframe modernisation and infrastructure software, and the new portfolio fits that position in the market. The aim is to help organisations modernise critical systems without weakening security or governance. Phil Buckellew, President of Infrastructure Modernisation at Rocket Software, outlined how the company views the role of risk visibility in technology decisions. "Modernisation decisions increasingly depend on an organisation's ability to understand and manage risk across its most critical systems," he said. He added: "When leaders have clear visibility into where risk exists and confidence that their IBM Z environments remain protected, security becomes an enabler of innovation and modernisation rather than a barrier to progress. It allows organisations to move faster, make informed decisions, and focus resources where they can have the greatest impact." Rocket Software said 99% of enterprises operate hybrid environments that include mainframes, a point it used to argue that perimeter controls and static checks are no longer sufficient on their own. In that setting, it is targeting teams that need continuous monitoring, patch visibility and evidence that policies are being enforced across core systems. The emphasis on quantum-related exposure also shows how suppliers are broadening the definition of security preparedness beyond today's active threats. For organisations with long data retention periods or regulated records, understanding where cryptographic methods are used has become part of longer-term planning as well as present-day compliance work. The portfolio is designed to connect technical findings to business-relevant risk and help teams decide where to act first across critical IBM Z environments.