Sold by Zinn Digital
Senior Java backend engineer delivering scalable Spring Boot APIs, microservices, and AI-assisted full-stack solutions for robust production systems.
Frustrated by fragile Java backends, unreliable third-party integrations, or data pipelines that fail under pressure? We construct and mend mission-critical backend architectures built to withstand real production workloads.
Drawing on more than 10 years of experience building enterprise-grade Java platforms, we have shipped systems capable of handling live telemetry from field hardware and establishing secure connections with external regulatory and financial networks. You collaborate directly with a senior engineer who appreciates the true business cost of downtime.
What you receive
Technical range
How we work together
If you require assistance planning, developing, or recovering a Java backend, specifically concerning data ingestion pipelines, microservices, or demanding third-party integrations, we provide a reliable service. Forward your specifications to receive a practical roadmap and a transparent estimate.
$100.99
Or pay €90.14 · £75.49 at today's rate — the rate is locked when you add it to your basket.
Development of a single RESTful API endpoint integrated with your database. - 1 Custom RESTful API Endpoint - Database Integration (MySQL/PostgreSQL) - Basic Error Handling & Validation - Postman Collection for API Testing - Full Source Code Delivery - 1 revision
Delivered in 3 days
Revisions included: 0
$625.99
Or pay €558.74 · £467.91 at today's rate — the rate is locked when you add it to your basket.
A complete Spring Boot microservice with database design and a simple AI-assisted Vue admin panel. - Complete Spring Boot Microservice (CRUD) - Database Schema Design & Optimization - Third-party API Integration (REST/RPC) - Simple Vue Admin Dashboard (AI-assisted) - Docker Configuration for Deployment - Full Source Code Delivery - 2 revisions
Delivered in 7 days
Revisions included: 0
$2,125.99
Or pay €1,897.59 · £1,589.12 at today's rate — the rate is locked when you add it to your basket.
High-volume data pipeline, microservices architecture, and full-stack delivery. - High-Volume Data Ingestion (MQTT to Kafka pipeline) - Microservices Architecture (Spring Cloud / Dubbo) - Redis Distributed Locks & ShardingSphere Setup - Complex Third-party Reporting Integration (AES/SHA256) - Complete Frontend Admin Dashboard (Vue/JS via AI) - CI/CD & Docker Deployment on Linux - 30 Days Post-delivery Support - Full Source Code Delivery - 3 revisions
Delivered in 14 days
Revisions included: 0
No account needed first — yours is created at checkout. We hold the money until you accept the work.
We are senior Java backend specialists who apply modern AI tools (like GitHub Copilot and Cursor) to produce the Vue/JavaScript required for admin dashboards. This provides a functional frontend more quickly and cost-effectively than recruiting a dedicated frontend engineer. We personally check and test all frontend code to guarantee correct integration with the backend APIs prior to handover.
Yes. Upon completion you obtain the full, clean source code via a Git repository with total ownership. We also supply thorough API documentation (Postman/Swagger), database schemas, and straightforward deployment guidelines (README/Docker).
We communicate via messages or your preferred platform, including Slack or email. You receive daily written progress reports, and we are accessible for a brief call if necessary. We maintain high responsiveness and keep you updated throughout the build process.
Yes. The Enterprise tier incorporates CI/CD and Docker deployment onto your Linux server. For the Basic and Standard tiers, we supply the deployment scripts (Dockerfile, docker-compose) and guide you or your team through the setup steps.
Yes, we are available for up to 40 hours a week on extended retainers. Several partners retain our services for continuous feature development, support and system optimisation. We can evaluate an hourly or monthly retainer once the primary project concludes.