System Developer

***** ********* **

Delin Ren Centreville, VA ****1

703-***-**** (C)

********@*****.***

SUMMARY

Delin Ren has more than 27 years of experience in information technology, enterprise systems

a rchitecture, systems engineering, project management, and enterprise technology strategy. His

c areer has focused on enterprise business applications, interoperability standards and collaborative

t echnologies on IBM mainframe and other platform. His most notable clients include Verizon, DHS

a nd HUD. US citizen with DHS/CBP clearance in process.

TECHNICAL SKILLS

Languages

Proficient in: Cobol, PL/I, Assembler H, JCL

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Familiar with: Java, C/C++, XML, PL/SQL

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Software & Technologies

Database: DB2, Oracle, DataComm

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Platforms: MVS, Z/OS, CICS, TSO/ISPF, Linux/Oracle/Tuxedo

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Other: SQL Developer; Endevor; Expediter; QMF and/or BMC; File-Aid; Syncsort; Tracemaster &

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D umpmaster;

EXPERIENCE

Jan 2013 - Present

Senior Software Developer

Employer: A gilex

5 155 Parkstone Dr, Chantilly, VA 20151

Supervisor: John Harless 540-***-****, may be contacted

• Delin Ren works in Mainframe Engineering team and is

responsible for developing the process to migrating the

C ICS/DataCom/DB2 applications within Automated

C ommercial System (ACS) and Border Enforcement and

Management Systems (BEMS) under Department of Homeland

S ecurity (DHS) Custom and Board Protection (CBP) from

I BM mainframe to Oracle Tuxedo platform, using Agile

methodology and Oracle Workbench. His activities include

c onverting assembly programs into COBOL for mainframe

m igration (C3E); performing data extract, transformation,

and loading (ETL) the DataCom data migration with

R aincode; converting Datacomm DBNTRY calls to Oracle

d atabase; and building Oracle SQL Connection between IBM

m ainframe and Oracle EXadata platform for both CICS and

b atch mode, enabling mainframe applications for dual access

O racle database; and synchronizing Oracle Exadata with

D ataComm on mainframe.

Sep 1997 – Nov 2012

Architect/Analyst/programmer

Employer: Verizon Communication

22001 Loudoun County Pkwy, Ashburn, VA 20147

Supervisor: Brian Conley 617-***-****, may be contacted

1997 – 2008 Delin Ren as a major developer of ExpressTrack, a COBOL/DB2 based table-driven

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h igh performance batch telephone billing system to process large volume data. His duties incled

c ollecting business requirements, planning high level system design, and elaborating in

a pplication detail design. Developing components to process monthly billing data, emphasizing

o n performance enhancement, reducing CPU time and execution time.

2008 -2009 Delin Ren worked on COBOL/CICS/DB2 Web Service back-end for Commercial Billing

F ont End (CBFE), involved in developing and maintaining CICS/DB2 and web service, WSDL, XML

processing, and communication with web server front end;

2009 – present Worked on Verizon Automatic Claim (VAC), an online web based trouble ticket,

c ustomer claim, adjustment system supported by DB2 stored procedure APIs (PL/I) and web service,

developed DB2 stored procedure to provide DB2 backend data for Web front end, The system allow

t he service reps and end-user create trouble tickets/claims using the web front end application, and

t he DB2 stored procedures on back-end provide support data to tickets/claims. Major duty include

developing DB2 stored procedure, designing and populating table data, cooperating with web front

e nd on SP test/debug;

Sep 1995 – Sep1997

Analyst/programmer

Employer: A dvanced Technology Systems

7925 Jones Branch Drive, Mclean, VA 22102

Supervisor: Leon Perry 571-***-****)

Delin Ren worked on the contract for Housing and Urban Department (HUD) to develop and

m aintain the payroll system on mainframe with COBOL/CICS/DB2 front-end, involving pension

r ecurring calculations and adjustments, generating periodic reports, and develop new functions

r equested by the clients.

1986 - 1995

System programmer/Administrator

Employer: B aoSteel

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Shanghai, China

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1987 – 1995 Delin Ren Led the MVS System Control team responsible for operation and

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c onfiguration of the MVS system on IBM mainframe for manufacture process. His activities

i nclude providing technique guidance to maintain the mainframe system daily operation, provide

t ech support to application team, and improving the system’s performance.

1990 – 1992 Delin Ren led a project at Shanghai STIC on the online search application on

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CICS/COBOL/Assembly (command and Macro level) provided by United Nations Educational, Scientific and

Cultural Organization (UNESCO), won Shanghai City Science & Technology Progress Award in 1992;

1986 -1987 Delin Ren wsa trained at IBM Germany for MBS System Operation and

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C onfiguration;

E DUCATION

1997 – 2001

George Mason University

F airfax, Virginia

B.S., Computer Science

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IBM Germany 1986 – 1987

D uisburg, German

One-year training program for MVS System, including MVS principle, DADS and VSAM,

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A ssembler, JCL, SMP/E, MVS Supervisor Services, JES2, MVS Measurement and Tuning, etc.

Contact this candidate