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Backend + QA · 2 Agents

BACKEND
CORE

Production-ready enterprise APIs with tests included in every delivery. Your frontend, our backend.

$2,500 USD / month · 2-week sprint
Request Backend Core → See other packages

Who it's for

You have a frontend.
You need solid APIs.

Backend Core is the ideal package for companies that already have a frontend team or a product with its own UI, but need someone to build and maintain a robust backend.

The Backend Agent implements every feature following SOLID principles and clean architecture. The QA Agent ensures everything delivered has test coverage. The Senior reviews every line before merge.

⚙️

Production-ready REST APIs

Spring Boot 3, exception handling, logs, basic security, and Swagger documentation included in every endpoint.

🧪

Tests in every delivery

No PR merges without tests. Unit + integration tests, minimum 80% coverage per delivery.

📋

Private repository + weekly meetings

Full access to your GitHub repository. 30-minute weekly meeting to align priorities and review progress.

Your squad

Senior + Backend + QA

▲ Senior Java — Kleeblack
⚙️Agent 1Backend
🧪Agent 2QA
📄Agent 3Docs
🔁Agent 4DevOps
🔍Agent 5Review

Agents active in this package — DevOps, Docs and Review join when you upgrade.

What you get

Deliverables
per sprint

REST APIs implemented

Endpoints designed following REST best practices. Error handling with correct HTTP codes, input validations, and structured logs with SLF4J.

Complete tests included

Unit tests with JUnit 5 + Mockito for the service layer. Integration tests with @SpringBootTest for endpoints. Minimum 80% coverage per module.

Swagger documentation

All endpoints documented with OpenAPI 3 via @Operation, @ApiResponse annotations and schemas. Swagger UI available at /api-docs from day 1.

Senior-reviewed code

Every PR goes through the Java Senior review before merge: SOLID compliance, security, performance, and design patterns. 0 critical issues as a delivery requirement.

Workflow

10 business-day
sprint

Day
Activity
Owner
1
Kick-off: requirements gathering → Epic in Jira. Architecture definition and ADR in Confluence.
Senior
2
Distribution of 2 tickets in Jira (Backend + QA). GitHub repository setup with feature/agent-1 and feature/agent-2 branches.
Senior
3–8
Backend Agent: implements REST APIs, business logic, and exception handling.
Agent 1

QA Agent: writes tests in parallel for each Agent 1 feature.
Agent 2
Parallel
8–9
Senior code review on all PRs. Swagger, tests, and code standard validation.
Senior
10
Client demo: live endpoints + Swagger UI + coverage report. Merge to develop.
Senior

Tools

Project stack

Java 17+
Spring Boot 3
Spring Data JPA
PostgreSQL
Hibernate
OpenAPI 3 / Swagger
JUnit 5
Mockito
JaCoCo
Maven
GitHub
Jira
Claude Code
Slack

Ready to scale?

Two paths
to grow

Upgrade to

DEV + OPS

When you need the squad to also handle deploy, CI/CD, and infrastructure.

$4,000USD / month

+$1,500 over your current plan

Upgrade to

FULL STACK

When you also need the squad to build the frontend. Complete MVP, from backend to UI.

$4,500USD / month

+$2,000 over your current plan

Get started

Ready for
your squad?

Tell us about your project. In less than 24 hours we'll confirm if Backend Core is the right fit.

Contact us now →
Or reach us directly: hola@kleeblack.com