You will get Java Backend Developer: API Integrations and Backend Services
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Project details
You will get a robust, scalable, and secure backend solution tailored to your business needs, with seamless integration of third-party and internal APIs. This offering focuses on building reliable backend systems using Java and modern frameworks such as Spring Boot, Spring Security, and Spring Data. With over 10 years of experience in API development and backend architecture, the result is clean, maintainable code designed for high performance and easy horizontal scaling. Whether the requirement is to connect external services, automate workflows, or build a full backend platform, clear documentation is provided to support smooth handover and long-term reliability.
Programming Languages
PythonCoding Expertise
Localization, Performance Optimization, SecurityWhat's included $5,000
These options are included with the project scope.
$5,000
- Delivery Time 20 days
- Number of Revisions 1
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About Tetyana
Solution Architect, Web Development, Database Development
100%
Job Success
Kharkiv, Ukraine - 5:02 am local time
With over 20 years of experience in backend development, data engineering, and AI integration, I turn complex requirements into high-performance systems—built to scale, adapt, and deliver results.
Whether you're building a custom internal tool, optimizing a data pipeline, or integrating third-party APIs I can help architect and implement a robust solution from start to finish.
🔹 What I Offer:
✅ Custom Web & Backend Development
– Java, Spring Boot, Python, JavaScript, React/Redux
– Scalable architectures for web apps and internal tools
✅ Advanced Database Design & Optimization
– Oracle, MySQL, PostgreSQL, SQL Server, SQLite, Neo4j
– Data modeling, normalization, performance tuning
✅ AI & Systems Integration
-- OpenAI/ChatGPT, Google, Meta, TikTok APIs
-- Payment providers: Stripe, PayPal, LiqPay
-- Calendar & comms: Google/Office 365 sync, Twilio
-- OAuth login (Google, Facebook, Apple)
✅ ETL Pipelines & Data Aggregation
-- Designing robust ETL workflows: from APIs, flat files, and scraped data
-- Cleaning, transforming, and syncing structured and unstructured data
-- Performance-focused data orchestration across systems
✅ Data Visualization & Reporting
-- Dashboards in Power BI, Excel, Google Data Studio
-- KPIs, trend analysis, and multi-source reporting for smarter decisions
✅ Cloud Infrastructure
-- AWS & Google Cloud: Deployment, scalability, and cost optimization
✅ Business Intelligence & Analysis
-- Translating data into insights to support growth, planning, and decision-making
🔹 Work Principles:
💡 Solution-Oriented: I identify challenges early and propose practical improvements
📞 Transparent Communication: Clear, responsive, and proactive updates
⏱️ Reliable Delivery: Meeting deadlines without compromising quality
🎯 Client-Centered: I focus on your business goals and success metrics
📩 Let’s talk if you’re looking for a technical partner who blends full-stack engineering with business insight and analytical thinking.
Steps for completing your project
After purchasing the project, send requirements so Tetyana can start the project.
Delivery time starts when Tetyana receives requirements from you.
Tetyana works on your project following the steps below.
Revisions may occur after the delivery date.
Review API Documentation and Requirements
Set Up Backend Environment