Demo

Tandem Developer (ATM Applications)

Key2Source INC
Berkeley, NJ Full Time
POSTED ON 4/3/2026
AVAILABLE BEFORE 6/2/2026

Job Title: Tandem Developer (ATM Applications)
Location: Berkeley Heights, NJ (Onsite)

Job Summary:

We are seeking an experienced Tandem Developer with strong expertise in HP NonStop (Tandem) systems and ATM applications development/support. The ideal candidate will have hands-on experience in designing, coding, testing, and maintaining ATM transaction applications, along with a deep understanding of financial services systems, payment processing, and transaction switching.

Required Skills & Experience:

· 5 years of experience in Tandem NonStop development (TACL, TAL, COBOL, SCOBOL, C, or C ).

· Strong experience with ATM/POS transaction processing systems (e.g., Base24, Connex, FIS, NCR).

· Good knowledge of Enscribe, SQL/MP, Pathway, Guardian, OSS.

· Familiarity with ISO8583 messaging formats and transaction switching.

· Experience with debugging and performance tuning in Tandem environment.

· Strong understanding of financial transaction processing, EFT, and settlement.

· Excellent problem-solving and communication skills.

Preferred Qualifications:

· Experience in Base24 classic/Base24-eps environment.

· Exposure to payments domain, card networks (Visa/MasterCard), and regulatory compliance.

· Prior experience in Agile/Scrum environments.

· Knowledge of scripting, automation, and DevOps for Tandem systems.

Education:

· Bachelor’s degree in Computer Science, Information Technology, or related field (or equivalent experience).

Work Location: In person

Salary.com Estimation for Tandem Developer (ATM Applications) in Berkeley, NJ
$124,948 to $154,318
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