Trevor Keith Yerlett
Telephone: 0794 1999395
Email: tyerlett@chemos.co.uk
A Highly Experienced Software Engineer, Developer, and
Analyst, with effective problem solving skills,
delivering accurate work to tight deadlines.
Key
strengths include:
·
C, C++, Fortran,
Pascal, VB, MS Office, Windows, Unix, VMS, mathematical methods
·
Broad experience –
Engineering, Transport, Oil & Gas, Financial, Life & Pensions, Media
·
Large scale application
software design, development, testing and implementation
·
Information
gathering, research, data analysis and simulation studies
·
Perseverance and
determination to resolve problems
Career History
Systems Development Engineer: Developing and maintaining software for Railway Engineering applications – simulation of electric
trains, power supply and signalling systems. Fortran & C++ on Sun Solaris and Windows 2000/XP. Excel & VBA front end.
·
Updated train
performance simulator to deadline, removing many serious flaws and improving
iteration algorithms.
Senior Software Engineer: Geophysical applications involving processing, editing and graphical display of well log data.
Fortran, C, C++ on Sun & IBM Unix, Linux, Irix and Windows NT. Porting code from Unix systems to Windows (Visual C++ & Fortran).
Prototyping of graphics using Excel. Meetings with clients to discuss requirements. Presentations and workshops at user group meetings.
Code management using Rational ClearCase. Documentation for users and developers.
·
Created new module
for plotting
well log data along well trajectory, with curved grids
·
Developed
software for 3-D borehole imaging display with customised colour mapping
·
C++
software for interactive display of geological dip data developed to deadline
Developer: Processing financial & statistical data from international vehicle manufacturers & dealers, using Vax VMS Fortran, Excel
& in-house data extraction & analysis tools. Producing client reports in many languages, with graphics. Consulting with translators for
foreign language reports.
·
Bespoke automotive
dealer statistical analysis module developed successfully in short time scale.
GE
Information Services Ltd., Kingston-upon-Thames, Surrey, 1998-1999 (contract)
Troubleshooting
and enhancements to risk management software (Fortran 77 on GE Mark III) used
by international banks. Development
of
interactive multi-user questionnaire using Excel, Access & VBA.
London
Underground Ltd, London, 1998 (contract)
Y2K
upgrade and porting of dynamic electric railway simulator from Sun Solaris to
Windows 95 (Salford Fortran compiler), testing
&
amendments. Project completed early in 3 months (7 allowed).
Reuters
Ltd., London, 1997-1998 (contract)
Vax
VMS Pascal, Fortran & DCL programming and documentation, for software controlling
and analysing large news database
(5
million docs.). Modified parallel processing code on DAP system.
Gang-Nail
Systems Ltd, Aldershot, Hants, 1997 (contract)
Enhancements
and bug fixing for a very large timber roof truss CAD/CAE package (20 Mb source
code) using Fortran 90 (Salford)
on
a PC. Liaising with a team of programmers and civil engineers.
Infochem
Computer Services Ltd., London, 1996-1997 (contract)
Oil
& Gas applications – Fortran models for viscosity prediction, mercury
solubility, asphaltene deposition. Data analysis & graphics
using
Excel. Support for expert witness in litigation case.
Watson
Wyatt Worldwide, Redhill, Surrey, 1996 (contract)
A priori development of parameterised pension calculation
software - Fortran on IBM RS6000 Aix, interfaced to Oracle 7 using C & SQL.
Code
written to detailed specifications using flowcharts, liaising with team of
actuaries, business analysts & testers. Handed over to junior
developer
at end of contract.
Infochem
Computer Services Ltd., London, 1995 (contract)
Dynamic
simulation study of condensate kick in drilling rigs – co-authored technical
paper with safety consultants. Developing software to
convert
complex mathematical formulae to Fortran code.
Tillinghast-Towers-Perrin,
London, 1994-1995 (contract)
Modifying
PC Fortran software for life insurance valuation & analysis, to process
data from ALPS & CAPSIL admin systems, consulting
with
actuaries. Code tested and ported to ICL mainframe on target.
BP
Research & Engineering, Sunbury-on-Thames, Middlesex, 1993-1994 (contract)
Conversion
of large Vax VMS Fortran programs (100,000 lines code) to Fortran 77 &
porting to PC, Sun, HP Unix. Development
of
machine-portable
front end to mimic Dec FMS, using Interacter.
Infochem
Computer Services Ltd., London, 1992-1993 (contract)
Fortran
software to generate complete phase envelopes for multicomponent fluid
mixtures. Enhancement of program generating code for
physical
properties, used in dynamic simulators.
BP
Research & Engineering, Sunbury-on-Thames, Middlesex, 1991–1992 (permanent)
Thermodynamicist: Developing Fortran thermodynamics software for Vax VMS
& PC. Using tools for code analysis & restructuring.
Thermodynamics
consultancy. Evaluating theoretical models.
·
Developed software
for phase & chemical equilibrium applications to tight deadlines
·
Wrote technical
reports & program documentation
·
Organised meetings
and client presentations
·
Ported a large suite of software from Vax to PC &
implemented it well within schedule
Senior Scientist/Engineer: Developing Fortran software for engineering
applications involving thermodynamics, fluid flow & heat transfer,
on
PC, Vax VMS, Unisys and IBM/Amdahl platforms.
Technical Officer (secondment): LNG import scheme feasibility & safety studies
·
Gave numerous
presentations to clients & represented the company at overseas meetings.
·
Successfully ported large
Fortran programs from IBM, Unisys and Vax to PC environment.
Other Activities:
Developing
educational software for chemical equation balancing using VB.net. Development
and testing of improved equation of state;
presented
paper at International Thermodynamics Conference, 1995. Church treasurer –
charts, budgets and accounts using Excel,
presentations
& meetings.
Computing Experience – main skills
|
Languages: |
C,
C++/VC++, Fortran, Pascal, VB/VB.Net/VBA, DCL, HTML |
|
Hardware: |
PC,
Sun, IBM RS6000, HP, SGI, Unisys, Dec Vax/Alpha, GE Mk III |
|
Operating systems: |
Windows 2000/NT/XP,
Unix/Linux/Aix/Irix, VMS, DecWindows, Solaris |
|
Applications & tools: |
MS
Excel/Word/Access/PowerPoint, ClearCase, Visual Studio |
Education and Training
CChem,
MRSC (1987). Training courses in C, C++, Unix, Presentation skills, Problem
solving
University of Bristol, 1977 - 1985
|
PhD |
Chemistry
(Experimental & computational thermodynamics) |
|
BSc
(Hons.) |
Chemistry
(2(1)) |
|
GCE
A levels (1977): |
Chemistry
(A), Physics (A), Mathematics (A), Further Mathematics (B) |
Personal Information
|
Date of Birth: |
13
December 1958 |
|
Nationality: |
British |
|
Interests etc.: |
Singing
- member of large choir, DIY, gardening, railways, genealogy |
.