Halpern-Wight Software, Inc.
31 Blueberry Lane Wilton, NH 03086 (603) 654-6474
email: phalpern@halpernwightsoftware.com http://www.halpernwightsoftware.com

This page is obsolete. Please see my most recent resume, here.

Pablo Halpern
Compiler/Interpreter Development Resume
Updated 04/16/2003

Summary:

I will implement a compiler or interpreter using technology that is tailored to your needs. I have a firm understanding of typed and typeless language concepts, recursive and regular-expression grammars, LALR, recursive-descent, and DFA parsers, as well as common compiler-generation tools like lex and yacc (flex and bison). My interpreters and compilers are highly structured and table-driven. I have also helped develop special-purpose languages that are easy to implement yet much cleaner and more powerful than the typical DOS-like languages that are commonly implemented with unstructured, ad-hoc interpreters.

I will take your project through all or any part of the software-development life-cycle, working either as a team leader or as an individual contributor. I ensure that the project's needs are considered at every level of detail. When programming, I avoid quick-and-dirty solutions in favor of maintainable, extensible and efficient implementations. I also document my work with clearly written specifications, design documents, and/or test plans. I am expert in a number of programming and scripting languages and am quick to pick up new languages or third party tools as needed for a particular task.

Skills:

General: Object-oriented analysis and design (using UML), strong verbal and written communications skills, Linux device drivers, embedded systems, team leadership, software tools, graphical user interfaces.

Languages: C++ (since 1989), C (since 1982), Perl, Pascal, Visual Basic, HTML, Unix Shells (Bourne, Bash, Korn, C-shell), 680x0 and 80x86 Assembly languages. Learning C#, JavaScript.

Operating Systems: Unix (Linux, Solaris, Sun OS, HP-UX), MS Windows (95, NT, 2000), OS/2, MS-DOS, VAX/VMS.

Tools and Libraries: X.11/Motif, lex (flex), yacc (bison), Clearcase, CVS, Visual Studio, Rational Rose.

Compiler/Interpreter Development Experience (Consulting and Employment)

Note: This resume contains only experience directly related to compiler and interpreter development. For a more complete resume, please visit my home page at the URL below.

CLI Power Tools, Wilton, NH (12+ months - ongoing)

• Productized tools for building Cisco-like command-line interfaces.
• Product cuts 3 to 6 months off the time needed to create a high-quality CLI.
• Enhance and maintain compiler for custom CLI-description language and compact and efficient run-time parser.
• Write high-quality customer documentation.
• Provide ongoing support and customization services to customers.
• Skills Used: CLI, C++, compilers (lex, yacc), interpreters, SNMP, Linux, Unix (Solaris), Embedded Systems, CVS, IP Networking.

Nauticus Networks, Framingham, MA (9 months)

• Designed embedded compiler to translate special pattern-recognition language into code for proprietary processor chip used in HTTP load balancer.
• Worked with hardware chip design team to improve http processor's instruction set.
• Designed, implemented and documented assembler for http processor
• Implemented software emulation of some http chip features.
• Wrote programs for parsing parts of http protocol.
• Skills Used: C++, compilers, Unix (Linux), Embedded Systems (OSE), Networking.

Tenor Networks, Acton, MA (7 months)

• Designed and implemented Cisco-like command-line interface (CLI) for high-speed MPLS service switch/router.
• Implemented compiler for custom CLI-description language.
• Implemented compact and efficient run-time parser.
• Skills Used: CLI, C++, compilers (lex, yacc), interpreters, SNMP, Unix (Solaris), Embedded Systems (OSE), Clearcase, Networking.

IPOptical, Dulles, VA (4 months)

• Designed SNMP sub-agent for Policy-Based Management.
• Participated in IETF working group on Policy-Based Management.
• Helped develop C-like language for describing policies and actions.
• Skills Used: Compilers, SNMP, written communications.

Ironbridge Networks, Lexington, MA (23 months)

• Helped develop Cisco-like command-line interface for terabit router.
• Implemented compiler for custom CLI-description language.
• Run-time parser reads compiler-generated tables and dispatches commands to Perl 5 interpreter.
• Skills Used: CLI, C++, Perl, compilers (lex, yacc), interpreters, SNMP, Unix (Solaris, Linux), Clearcase, Networking.

Desktop Scientific Systems, MA (9 months, then sold to Polygen)
Vice President of Software Development

• Co-founded company to make interactive scientific calculation and graphing software product for PCs.
• Participated with two partners in conceptualization and specification of product.
• Designed and implemented language interpreter for APL-like mathematical modeling language.
• Prior to introduction of MS Windows, designed and implemented GUI infrastructure with virtual memory and simple multi-tasking.
• Supervised 2-3 engineers and performed daily code reviews.
• Skills Used: C, DOS, interpreter design, user interfaces, team leadership, business leadership.

Mass Computer Associates, Wakefield, MA (9 months)
Systems Analyst

• Documented and helped clean up compiler generation tools.
• Participated in planning of product for distributed Ada development.
• Skills Used: C, Pascal, Unix (Sun OS), VAX/VMS, compiler design.

Data Concepts, Inc., Lexington, MA (22 months)
Software Engineer

• Involved in development of TRAC language used for insurance data processing.
• Ported TRAC interpreter from TI 9900 to Motorola 68000 assembly language
• Made improvements to TRAC interpreter while re-writing interpreter in C.
• Skills Used: C, 68000 assembly language, Unix (HP-UX), interpreter design.

Education:

Hampshire College, B.A. in Computer Science, May, 1983.
Thesis: Language Extensions for Improved Data Abstraction (a procedural language approximation of object-oriented concepts).

Publications:

Book: The C++ Standard Library from Scratch, Que Publishing, November, 1999. An introduction to the C++ Standard Library, including STL, strings, and I/O streams. Guides the reader through the development of a working personal information manager (PIM) application using standard library facilities.

Training material: The C++ Standard Library, 1998. Approx. 110 pages of slide presentations, exercises (with solutions), and accompanying instructor's manual used to teach a two or three-day training for intermediate or advanced C++ programmers.

Article: "M and Robotics," with Max Rivers and James Poitras, M Computing, April, 1995.

References: Furnished on request

How to Contact:

By Phone:	(603) 654-6474
By email:	phalpern@halpernwightsoftware.com
On the Web:	http://www.halpernwightsoftware.com
By Postal Mail:	Halpern-Wight Software, Inc. 31 Blueberry Lane Wilton, NH  03086