---
title: "I Will develop scalable Java Spring Boot APIs and microservices"
url: https://zinnhub.com/zinns/i-will-develop-scalable-java-spring-boot-apis-and-microservices/
description: "Looking for a reliable Java backend expert? I build scalable Spring Boot APIs and microservices, and can deliver complete full-stack features using AI-assisted frontend development. I am happy to start with a small, low-risk project to prove my skills and ensure a perfect fit."
published: 2026-10-18T12:40:17+00:00
modified: 2026-10-18T12:40:17+00:00
language: en-GB
---

# I Will develop scalable Java Spring Boot APIs and microservices

**Stop struggling with high-volume data ingestion, complex third-party integrations, or unstable Java backends. I build and rescue mission-critical backend systems that scale reliably in production.**

With over 10 years of experience delivering enterprise-grade Java platforms, I have built systems that process real-time telemetry from field devices and sync seamlessly with external regulatory and financial platforms. You get a senior engineer who understands the business impact of system downtime.

**What You Will Get (My Core Deliverables):**

- **High-Volume Data Ingestion:** End-to-end pipelines (e.g., MQTT/EMQX to Kafka) for real-time telemetry and IoT device data.
- **Complex Third-Party Integrations:** Automated multi-party reporting middleware using XXL-JOB, REST, RPC (OpenFeign, Dubbo), and Spring Cloud Gateway, complete with SHA256/AES encryption.
- **High-Concurrency Data Handling:** ShardingSphere-sharded MySQL with Redis distributed locks, ensuring your system handles massive data retention and concurrent writes without breaking.
- **Workflow Automation:** Custom workflow engines (e.g., Activiti) connecting vehicle terminals, hospital clients, and national reporting platforms.

**My Technical Expertise:**

- **Microservices Architecture:** Spring Boot, Spring Cloud, Dubbo, Nacos, OpenFeign.
- **Messaging & Streaming:** Kafka, RabbitMQ, MQTT (EMQX), real-time device ingestion.
- **Data Layer:** MySQL, Oracle, ShardingSphere, MongoDB, Redis, SQL tuning, distributed locks.
- **Reliability & Security:** Seata distributed transactions, XXL-JOB scheduling, JWT auth, gateway security.
- **Delivery & DevOps:** Linux, Nginx, Docker.
- **Full-Stack Capabilities:** While I am a backend expert, I leverage modern AI tools and my JavaScript/Vue knowledge to deliver complete frontend admin dashboards and back-office tools. This saves you the cost and coordination headache of hiring a second frontend developer for the admin side.

**How We Will Work Together:**

- **Clear Communication:** Fluent written English, daily progress updates, and reliable overlap with your timezone.
- **Outcome-Driven:** I own outcomes, not just tickets. I flag risks early and propose the simplest, most cost-effective architecture that solves your problem.
- **Flexible Engagement:** Available 40 hrs/week for both long-term retainers and fixed-scope projects.

**Why Choose Me?**
If you need help designing, building, or *rescuing* a Java backend—especially involving data ingestion pipelines, microservices, or tricky third-party API integrations—I am the safe pair of hands you are looking for.

**Message me with your requirements today, and I will reply with a concrete execution plan and an honest estimate.**