A Intro · Engineering signal
Madrid, Spain Java · Spring · DevOps Orbiting Language Nodes · Clean AI

I build reliable enterprise systems that teams can run, evolve and trust.

Senior Full Stack Developer and Systems Analyst focused on Java, Spring Boot, Angular, APIs, databases and delivery discipline for public-sector and business-critical platforms.

Discover Design Build Operate
4+ years shipping software
3 engineering teams
2 public-sector systems
Impact

A developer profile built around outcomes, not noise.

Inspired by dense technical resumes and modern product pages: fewer empty claims, more visible proof, clearer positioning and faster scanning for recruiters or technical leads.

01 / Analysis

Translate business needs into durable systems.

Requirements, architecture and implementation aligned before code grows expensive to change.

02 / Engineering

Ship backend, frontend and integrations together.

Java, Spring Boot, REST, SOAP, Angular, JSP/JSF and SQL across enterprise environments.

03 / Delivery

Make releases reviewable and repeatable.

CI/CD, Docker, Jenkins, AWS, Bash and testing practices that reduce manual risk.

Capabilities

The engineering capabilities behind the project work.

A practical map of the architecture, integration, data and delivery habits that show up repeatedly across the systems above.

Transactional platforms

Business-critical systems with clear domain boundaries, reliable persistence, migrations, validation, authentication and operational health checks.

Java 21 Spring Boot 3 Spring Security JPA PostgreSQL Flyway Actuator

Modular backend ecosystems

API-first services, Maven modules, gateway-ready structures, profile-based configuration and integration contracts that can evolve without breaking teams.

REST APIs Spring Cloud Maven WebSocket/STOMP JUnit Testcontainers

Event-driven and automation systems

Separated pipelines for data ingestion, decision logic, risk checks, execution and analytics, connected through message-driven patterns and explicit schemas.

Python Rust ZeroMQ Protobuf Docker Observability

Modern frontend delivery

Fast, maintainable interfaces for dashboards, marketing sites and operational tools, with typed components, responsive layouts and automated UI checks.

TypeScript React Next.js Astro Tailwind Playwright Vitest

.NET web applications

Server-rendered applications with identity, relational data access and pragmatic MVC structure for internal tools and business workflows.

.NET 8 ASP.NET Core Identity Entity Framework SQL Server Razor
BackendJava · Spring · .NET
FrontendReact · Angular · Astro
DataPostgreSQL · SQL
DeliveryDocker · CI/CD
QualityTests · review · proof
Enterprise Integrations

Cloud, identity and signature flows that make systems useful in the real world.

I design high-demand integrations for real business workflows: APIs, cloud storage, identity, digital signature, automation, audit trails and operational evidence that teams can trust.

Identity · Signature · Evidence

From a verified user action to a document that can be stored, audited and operated.

The professional layer is not just connecting APIs. It is knowing where trust starts, how signatures are produced, how evidence is preserved and how the system behaves when something fails.

Cl@ve access AutoFirma Professional signature S3 evidence
☁️

Cloud and storage

AWS-ready delivery, S3 document storage, secure configuration, logs and health checks for systems that need to scale cleanly.

AWSS3CloudWatch
🔗

APIs and data exchange

REST, SOAP, webhooks and third-party services designed with contracts, retries, versioning and operational ownership.

RESTSOAPWebhooks
🔐

Identity and signature

Cl@ve, certificates, AutoFirma, @firma and professional signature flows for sensitive administrative workflows.

Cl@veAutoFirma@firma
🧾

Payments, registry and audit

Payment platforms, electronic registry, PDFs, notifications, traceable events and evidence for formal business processes.

RedsysAEATAudit
Entity & platform ecosystem

Integration context from public-sector, identity, payment and cloud work.

Displayed as integration context, not as sponsorship or endorsement.

AEAT Tax Agency payments
CMT Tobacco Market Commissioner
MEFP Ministry of Education
Cl@ve Digital identity
Redsys Payment platform
AWS Cloud delivery
S3 Object storage
@firma Signature validation
Most requested areas APIs Automation Identity Cloud storage Signature Audit
Technical Stack

The tools I use to build and operate software.

Grouped like a technical capability map, so a lead can quickly understand where I fit in a team.

Backend Core

Java 8/17/21/25 Spring Boot Spring MVC Spring Security WebSocket/STOMP Microservices REST API SOAP / WS JUnit TDD C# .NET 8 ASP.NET Core

Frontend UX

TypeScript Angular React Next.js Astro JavaScript HTML5 CSS3 Bootstrap Tailwind shadcn/ui JSP / JSF Struts

Data Performance

PostgreSQL Oracle MySQL SQL Server Data Modeling Query Optimization Flyway Redis

DevOps Proof

AWS Docker Docker Compose Jenkins CI/CD Git Apache 2 Bash / Linux Postman SoapUI JasperReports Playwright Vitest ZeroMQ Protobuf
Contact

Let’s build something reliable.

I am open to Full Stack, Java, Systems Analyst and DevOps-oriented roles. For privacy, professional contact is handled by email first.

Email moasinbd@gmail.com
Availability Professional contact by email
Location Madrid, Spain
GitHub github.com/Moasinbd