Accellor
via Workable
Senior Mainframe Engineer
This is the employer's own posting, not a copy on a job board.
What we know
Is it still open?
Confirmed still open
Last checked 10h ago — checked against the employer's own applicant tracking system, which is the company answering directly.
We re-read the employer's own applicant tracking system and the posting was still there. That is the company answering directly.
How old is it?
Posted 76d ago
The date the source published, not the day we noticed it (2026-07-01). Last seen at its source 1h ago.
Is it remote?
Marked remote on the employer's board
Their board carries a remote setting on this posting — a field they filled in, not wording we read. The location field names somewhere specific, which is usually where the team or the entity sits.
Who may apply?
United States
The description states no restriction of its own. This is the source's own tag.
Pay not stated
Similar roles pay $161k–210k/yr
Middle 50% of 741 listings that do state pay — Engineering · Senior · United States · USD/year. This employer has published no salary; this is what comparable listings we hold disclose, never converted between currencies or periods. How this is calculated.
Skills named in the ad
Recognised terms only, from a fixed vocabulary — this is what CV matching compares against.
Carried by 1 source
-
workable employer's own board first seen 10d ago · last seen 1h ago
The listing
Accellor is an AI-native services firm purpose-built for the post-ChatGPT era. Free from legacy constraints, we focus on delivering measurable business outcomes through advanced AI, data, and engineering capabilities. Our mission is to operationalize AI at scale and unlock sustained enterprise value.
Our offerings span AI solutions, data services, enterprise applications, and product engineering, tailored to industry-specific needs across healthcare, life sciences, telecom, retail, financial services, and technology. By leveraging design thinking and technology-agnostic architectures, we ensure faster time-to-value and seamless interoperability.
With a proven track record of enabling Fortune 100 enterprises and global innovators, Accellor stands as a trusted partner for organizations seeking to harness the full potential of AI. Our vision is clear: to build intelligent, connected ecosystems that deliver measurable outcomes and redefine the future of enterprise transformation.
We're looking for an experienced Senior Mainframe Developer to join our team and help build, maintain, and modernize mission-critical applications supporting the financial services industry.
If you enjoy solving complex technical challenges, working with large-scale enterprise systems, and delivering reliable, high-performing software, we'd love to hear from you.
In this role, you'll collaborate with architects, business stakeholders, and engineering teams to develop and support high-volume transaction processing systems that are essential to daily business operations.
What You'll Do
- Design, develop, test, and maintain enterprise COBOL applications on IBM Mainframe platforms.
- Develop and enhance batch and online transaction processing systems.
- Analyze business and technical requirements to deliver scalable, reliable solutions.
- Troubleshoot production issues and provide ongoing application support.
- Optimize application performance and improve system stability.
- Participate in code reviews and contribute to development best practices.
- Collaborate with cross-functional teams throughout the software development lifecycle.
- Support modernization initiatives and integration with newer technologies while maintaining critical legacy systems.
- Create and maintain technical documentation.
Requirements
- 8+ years of IBM Mainframe development experience.
- Strong hands-on experience with:
- COBOL
- JCL
- CICS
- DB2
- VSAM
- Experience supporting enterprise-scale production applications.
- Strong analytical and problem-solving skills.
- Experience working within the Software Development Life Cycle (SDLC).
- Excellent communication and collaboration skills.
Preferred Qualifications
- Experience within the Banking, Financial Services, or Insurance (BFSI) industry.
- Knowledge of financial transaction processing systems.
- Experience with IBM z/OS.
- Familiarity with tools such as File-AID, Abend-AID, Expeditor, Endevor, or Changeman.
- Experience integrating mainframe applications with distributed systems or APIs.
- Exposure to Agile development methodologies.
- Experience supporting modernization or digital transformation initiatives.