Daniel Celestine
@danielcelestine
Senior payment systems engineer driving secure, scalable digital payments.
NigeriaWhat I'm looking for
I’m a Payment Systems Engineer with 7+ years of progressive experience delivering secure, highly available, and scalable payment infrastructure across banking and fintech. I combine a First Class Bachelor of Engineering with a Master’s degree in Information Management to drive complex enterprise integrations and operational excellence.
In my current role at PalmPay, I maintain 99.9%+ system availability for mission-critical enterprise payment channels and reduce recurring infrastructure failures by 98% through root cause analysis and monitoring enhancements. I lead high-priority incident investigations under strict SLA windows, act as a primary liaison for core infrastructure partners (NIBSS, UPSL, Interswitch, eTranzact), and optimize transaction flows using application logs and distributed traces—while enforcing strict PCI DSS compliance.
Experience
Work history, roles, and key accomplishments
Maintains 99.9%+ availability for mission-critical enterprise payment channels and leads technical investigation and resolution of high-priority payment incidents under strict SLA windows. Reduced recurring infrastructure failures by 98% through root cause analysis and monitoring enhancements, and analyzes logs and distributed traces to optimize transaction flows.
Delivered advanced production support across multiple payment channels and optimized escalation workflows to reduce ticket resolution times. Resolved complex technical issues for enterprise B2B customers, financial institutions, and internal engineering teams.
Processing & Switching Ops Specialist
Unified Payment Services (UP)
Jan 2022 - Jan 2023 (1 year)
Delivered 20+ enterprise payment system integrations for Visa, Mastercard, UnionPay, and local banks while monitoring switching infrastructure for anomalies. Achieved 100% first-time certification success and automated daily operational/transaction reporting using SQL, reducing manual engineering effort by 40%.
Business Innovation & Delivery Spec
Unified Payment Services (UP)
Jan 2021 - Jan 2022 (1 year)
Designed and implemented secure ATM integrations using TranzWare Online while ensuring strict PCI DSS compliance. Used SQL and PL/SQL to diagnose, trace, and resolve second-level technical payment processing failures.
Service Executive
FirstBank Nigeria
Jan 2019 - Jan 2021 (2 years)
Partnered with fraud management teams to evaluate transaction patterns and strengthen channel security. Provided high-tier operational support for banking products, supporting customer retention through technical advisory.
Graduate Electrical Engineer
National Youth Service Corps (NYSC)
Jan 2018 - Jan 2019 (1 year)
Managed technical reporting and field infrastructure assistance for regional engineering initiatives.
E-Commerce Delivery & Operations Officer
Unified Payment Services (UP)
Jan 2021 - Present (5 years 6 months)
Coordinated API integration and delivery between software engineering groups and external stakeholders to accelerate merchant onboarding.
Education
Degrees, certifications, and relevant coursework
Ahmadu Bello University
Master of Information Management, Information Management
Earned a Master of Information Management at Ahmadu Bello University.
University of Agriculture, Makurdi
Bachelor of Engineering, Electrical & Electronics Engineering
Grade: First Class Honours
Earned a Bachelor of Engineering (First Class Honours) in Electrical & Electronics Engineering.
Kogi State Polytechnic
National Diploma, Electrical & Electronics Engineering
Grade: Distinction
Completed a National Diploma in Electrical & Electronics Engineering with Distinction.
Availability
Location
Nigeria
CanadaJob categories
Skills
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