Denis Sheahan

Current

Distinguished Engineer at Sun Microsystems

Past

engineer at sunmicrosystems
member technical staff at sun microsystems
engineer at ASK Ingres

Engineer at Teletronics pty

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Education

Trinity College, Dublin

Recommended

13 people have recommended Denis

Connections

434 connections

Industry

Computer Hardware

Websites

Denis Sheahan’s Summary

A leading expert in Sun's Multi-core Multi-threaded CMT architecture. Senior Software Architect who drives technology from inception through product release including the alignment of multiple Engineering organizations. Exceptional performance analyst whose deep knowledge of both software and hardware provides solutions in critical customer situations. A passionate communicator skilled at evangelizing technology to both customers and internal technical audiences.

Denis Sheahan’s Specialties:

Software performance, scalability, developing parallel software architectures, capacity planning and tuning.

Denis Sheahan’s Experience

Distinguished Engineer

Sun Microsystems

(Public Company; JAVA; Information Technology and Services industry)

April 2007 — Present (2 years 9 months)

Member of the team defining the next generation of SPARC volume processors. Define architecture enhancements to accelerate Virtualization, hardware threading, Java, crypto and networking. Also involved in defining the performance counter framework for the processors.

Member of a virtual team deploying and enhancing open source Web 2.0 software stacks including Memcache and
Hadoop on Sun's CMT servers

Performance evaluation and software enhancements for UltraSparc T1 and T2 based systems, from chip bring up through delivery and launch.
engineer

sunmicrosystems

(Public Company; Computer Hardware industry)

1994 — 2007 (13 years )
member technical staff

sun microsystems

(Public Company; Computer Hardware industry)

1993 — 2007 (14 years )
engineer

ASK Ingres

(Public Company; 201-500 employees; Computer Software industry)

1992 — 1994 (2 years )
Engineer

Teletronics pty

(Computer Hardware industry)

1986 — 1989 (3 years )