Available for backend roles

Pedro Manjate Júnior

Java Enterprise Developer

Spring Boot · Microservices · Event-Driven Systems · DevOps

~/pedro - zsh

$ whoami

backend engineer building national-scale, mission-critical Java systems in Maputo, Mozambique

$ stack --core

Java · Spring Boot · Servlets · RabbitMQ · PostgreSQL

$ status

shipping resilient distributed services

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PMJ

Pedro Manjate Júnior Backend Java Developer focused on scalable, durable systems and distributed integrations.

Profile

About

Software developer with consolidated experience designing and implementing scalable, durable and mission-critical Java Enterprise solutions. Specialized in Spring Boot, microservices architecture and distributed systems integration, covering the full development cycle from requirements through design, implementation, testing, debugging and technical documentation.

Strong foundations in relational databases, messaging with RabbitMQ, version control with Git, Maven and DevOps practices with Docker, CI/CD and Linux. Used to anticipating bottlenecks and proposing proactive solutions in high-robustness, national-scale environments. Graduate in Computer Science from UEM.

0Years building

0Jessy bot users

0Certifications

Nat'lScale systems

Capabilities

Tech Stack

Core Java & Backend

Java 11 / 17Jakarta EEServlets / JSPSpring BootSpring SecuritySpring Data JPAHibernateREST APIsJWT

Architecture & Messaging

MicroservicesEvent-DrivenRabbitMQDead Letter QueueRetry / TTLExecutorServiceCompletableFuture

Data & Persistence

Oracle SQLPL/SQLPostgreSQLMySQLRedisFlyway

DevOps & Build

MavenGitDockerDocker ComposeGitHub ActionsNginxLinuxShell

Tools & Methods

JIRAConfluenceBitbucketScrum / AgileUMLGoF PatternsClean Code

Integrations & Secondary

USSDBiometricsFirebase FCMNode.jsTypeScriptPythonReact

Career

Experience

Backend Java Developer (Spring)

Present

Tablu Tech

Design and build national-scale, mission-critical Java and Spring Boot applications with focus on scalability, durability and robustness.
Implemented asynchronous, event-driven architectures with RabbitMQ, replacing synchronous flows and eliminating deadlocks while preserving transactional consistency on PostgreSQL.
Integrated distributed channels and services including USSD, facial recognition and biometrics, Firebase FCM and external endpoints.
Provide technical leadership through code review, development standards and team mentoring.

Full Stack Developer

Infomídea / Bingahost

Built and maintained robust systems for enterprise clients, from backend services with Spring Boot and REST APIs to frontend delivery.
Handled relational database modelling and optimization, authentication and security with JWT.
Deployed and operated applications on Linux servers while maintaining technical documentation.

Java Full Stack Developer - Digital Marketing

Sendy / A Escola do Excel

Developed Java web platforms for marketing automation.
Designed REST APIs and integrations with external services, plus frontend components and reporting modules.

Teaching Assistant - Computer Science

Universidade Eduardo Mondlane (UEM)

Led practical programming and data structures classes with technical lab support and syllabus review.

Selected Work

Projects

SaaS · Polyglot Microservices

HeisenGo

Live ↗

POS, inventory, PDF invoicing and real-time reporting. WhatsApp sales bot with M-Pesa payments and multi-business roles and permissions. Built on a polyglot microservices backend with Java core, plus Node.js and Python services.

Java / SpringNode.jsPythonMicroservicesPostgreSQLM-Pesa

AI WhatsApp Bot · 1000+ users

Jessy

Live ↗

Asynchronous processing of files up to 1 GB, including OCR, document conversion and media workflows, serving more than 1000 active users on a Node.js and Java backend.

Node.jsJavaOCRAsync1 GB files

Final Thesis · UEM

Parish Management System with AI

Java and Laravel backend with Python and Node.js services driving an OCR pipeline using PaddleOCR and TrOCR, plus automatic certificate generation for production partners in the Arquidiocese de Maputo ecosystem.

Java / LaravelPythonNode.jsPaddleOCRTrOCRPostgreSQL

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