Available for new opportunities

Shailender
Singh

Senior Full Stack Engineer · FinTech & AI/ML · Credit Risk Systems

12+ years architecting scalable, mission-critical financial systems for global banking institutions. Specialist in AI-driven credit decisioning engines, fraud detection, and digital wealth services.

Contact

📧thejspythonguy@gmail.com
📞+1-904-217-5437
📍Jacksonville, FL, USA
🐦@thejspythonguy
🔗LinkedIn
💻GitHub

🎖️ FinTech Certified · MongoDB Certified

⚡ Technical Arsenal

Skills & Expertise

🖥️ Front-End

Angular (NgRx)React (Redux)TypeScriptJavaScriptHTML5/CSS3Bootstrap

⚙️ Back-End

Node.js (Express)Python (FastAPI)Spring BootJavaGraphQLREST APIsMicroservices

🗄️ Database & Tools

MongoDBOracleMySQLRedisJestSeleniumSplunkGitJira

🏦 Domain Expertise

FinTechCredit Decisioning (FICO)AML/KYCML Predictive ModelsFraud DetectionDigital Onboarding

💼 Career Journey

Professional Experience

Assistant Consultant

Tata Consultancy Services · Jacksonville, USA

Nov 2017 – Present

Embedded at CitiBank NA · Lead Engineer, Digital Account Opening & Credit Decisioning

  • ▸

    AI credit engine: Built FICO Decision Modeler integrations with ML predictive models — 15% better risk accuracy, 30% faster approval cycles.

  • ▸

    Microservices migration: Modernised 5+ legacy monoliths into MEAN/Spring Boot services — cut P95 latency 25%, saved ~$40K/month on cloud.

  • ▸

    BDD automation: 99% test coverage framework eliminated 80%+ production defects, saving ~120 QA hours per sprint.

  • ▸

    Global delivery: On-site collaboration with Saudi Aramco teams; zero missed SLAs across USA, India & Saudi Arabia over 6+ years.

🏆 Impact

Key Achievements

🛡️
99%Test Coverage

Eliminated 80%+ of production defects across CitiBank systems.

⚡
25%Latency Reduction

P95 improvement via microservices modernisation.

📈
20%Digital Acquisition

UX-optimised onboarding flows boosted customer acquisition.

💰
$40KMonthly Savings

Cloud infrastructure optimisation per month.

🌍
0Missed SLAs

Cross-timezone delivery: USA, India & Saudi Arabia over 6+ years.

🤝
12Engineers Led

Full onshore-offshore transition with zero continuity breaks.

🎖️ Credentials

Certifications

⚙️

Amazon Web Services

Associate

AWS Certified Developer

DynamoDBAPI GatewayIAMCI/CDSDK
🍃

MongoDB University

Associate

MongoDB Certified Developer

AtlasAggregationIndexingSchema DesignCompass

Course certificates from public assets

AI for Work and Life

University of North Florida

AI for Work and Life

Nov 14, 2025

1 CEU

[NEW] Ultimate AWS Certified Cloud Practitioner CLF-C02

Udemy

[NEW] Ultimate AWS Certified Cloud Practitioner CLF-C02

Aug 12, 2024

15 total hours

Standard 9.2 - Part 1 Foundation Enterprise Architect Course

Udemy

Standard 9.2 - Part 1 Foundation Enterprise Architect Course

March 29, 2026

2.5 total hours

The EU AI Act Compliance Masterclass 2026

Udemy

The EU AI Act Compliance Masterclass 2026

April 11, 2026

2 total hours

Financial Crime: Processes & Technology - Masterclass

Udemy

Financial Crime: Processes & Technology - Masterclass

April 26, 2026

10 total hours

Fraud Detection in Python

Udemy

Fraud Detection in Python

May 4, 2026

2 total hours

🎓 Background

Education & Interests

🏫 Education

Bachelor of Computer Science & Technology

Himachal Pradesh University, Shimla, India

July 2011

💡 Professional Interests

AI in Financial ServicesIntelligent AutomationDistributed SystemsLLM Applications in Credit RiskOpen SourceTechnical Mentorship

📊 At a Glance

12+Years of experience
99%Automated test coverage
$40KMonthly cloud savings achieved
3Continents worked across