Software Engineer | Java & Spring Boot | Distributed Systems, Payments & Platform Engineering

I build backend systems and platforms for complex financial workflows.

Java and Spring Boot engineer in regulated financial services — distributed systems, platform engineering, and deep real-time payments experience, with automation that makes complex engineering faster and safer to operate.

Java Spring Boot Kafka ISO 20022 Distributed Systems
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Portrait of Nader Abdelshahid
Nader Abdelshahid Software Engineer · United States
67% Reduction in recurring validation time (~30 min → ~10 min)
5+ yrs Software development experience
4+ yrs Java & Spring Boot in production
2× Wells Fargo Team Spotlight Awards (2024, 2025)

Experience

Backend engineering in a regulated environment.

Four-plus years shipping distributed Java and Spring Boot services in financial services — carrying measurement, risk-awareness, and clear communication from earlier lab and quality work into software.

Full resume

Wells Fargo

Jul 2026 — Present

Software Engineer — Agent Liquidity and Deposits Platform

Transferred internally from Real-Time Payments to the Agent Liquidity and Deposits Platform in Jul 2026.

Wells Fargo

Aug 2022 — Jul 2026

Software Engineer — Real-Time Payments

Built and maintained Java/Spring Boot services and REST APIs for FedNow and TCH RTP v3.0; resolved 50+ defects/work items across payment workflows, validation, and release readiness. Worked with ISO 20022, Kafka, MongoDB, JUnit, CI/CD, security remediation, and production validation. Reusable automation reduced recurring validation time by approximately 67%, from about 30 minutes to about 10 minutes.

  • Java
  • Spring Boot
  • Kafka
  • ISO 20022
  • MongoDB
  • Jenkins
  • SonarQube

Auctivon

2019 — Present

Founder & CEO

Founder-led software and product development across web applications and developer tools.


Featured engineering systems

Deterministic workflows, financial platforms, and dependable developer tooling.

Explore selected systems through their domain flows, validation steps, and reviewable evidence.

Instant payments workflowsAuditable execution

Continuum

Continuum models fintech payment workflows across inbound and outbound transfers, acknowledgments and rejects, returns, and return of funds. Deterministic steps and validation gates make each path replayable and auditable, with evidence captured for review.

  • Inbound / outbound
  • Returns / return of funds
  • ISO 20022 flows
  • Validation gates
  • Replayable evidence
Read the case study
CONTINUUM / PAYMENT FLOW
Current stateInbound payment

Inbound and outbound paths, returns, and return-of-funds flows are modeled explicitly.

01Payment
02ISO 20022
03Transfer
04Ack / reject
05Return flow
06Evidence
07Review / replay

Technical strengths

Organized the way teams actually hire.

Depth in backend and payments, with working range across testing, delivery, security, and platform automation.

Backend & distributed systems

  • Java
  • Spring Boot
  • Spring MVC
  • REST APIs
  • microservices
  • Kafka
  • distributed systems

Payments & data

  • FedNow
  • TCH RTP v3.0
  • ISO 20022
  • MongoDB
  • Oracle/SQL

Testing, delivery & security

  • JUnit
  • Mockito
  • Postman/Newman
  • Gradle
  • Jenkins
  • SonarQube
  • Black Duck
  • Checkmarx
  • Git
  • CI/CD

AI, platform & automation

  • Python
  • FastAPI
  • Docker
  • workflow orchestration
  • validation gates
  • replay/resume
  • evidence packaging

Products

Independent product work and early prototypes.

Each project is labeled by its current maturity, without claims about customers or production scale.

Product family · Platform

CenterFuseHQ

The umbrella experience and shared product-family architecture connecting SellFuse and BuyFuse while keeping their runtimes independent.

Architecture overview
Accessibility prototype

ASL Communication Aid

A React browser prototype using MediaPipe hand landmarks for limited, local recognition and avatar-based practice.


Contact

Let's build something reliable.

Open to software engineering, backend, payments, and AI-platform work where automation and operational reliability matter.

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Answers use approved public portfolio and resume facts.

Answer style

Select a prompt or ask about Nader’s experience, payments work, engineering approach, or public projects.

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