You will get Optimized REST service | Spring Boot | AWS | Java Developer
Project details
𝗗𝗼𝗻’𝘁 𝗯𝘂𝘆 𝗵𝗲𝗿𝗲, 𝗺𝗲𝘀𝘀𝗮𝗴𝗲 𝗺𝗲 𝗱𝗶𝗿𝗲𝗰𝘁𝗹𝘆!
As a Senior Java Developer will build you efficient REST service with Java / Spring Boot / Spring Security / JPA / Hibernate / PostgreSQL / MariaDB . I suggest you to use AWS / Amazon Web Services, usually RDS, S3, ECS, Lambda, Batch, SNS, SQS
As a Senior Java Developer will build you efficient REST service with Java / Spring Boot / Spring Security / JPA / Hibernate / PostgreSQL / MariaDB . I suggest you to use AWS / Amazon Web Services, usually RDS, S3, ECS, Lambda, Batch, SNS, SQS
Programming Languages
JavaScript, Java, KotlinCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$20,000
|
Standard
$25,000
|
Advanced
$35,000
|
|---|---|---|---|
| Delivery Time | 5 days | 15 days | 30 days |
Number of Revisions | 0 | 1 | 2 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
4 reviews
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MW
Markus W.
Apr 4, 2025
Senior Java developer for a long term project
I had the pleasure of working with Oleksandr on a complex Spring Boot project. He was diligent in completing the tasks he was assigned and demonstrated a good understanding of Java development. Throughout the project, he maintained good communication and was open to feedback. He was dedicated to the work and was professional throughout the process. I appreciated his contributions to the project and would recommend him for future opportunities, particularly for roles that involve collaboration and continuous improvement.
BO
Bogdan O.
Feb 13, 2025
Thymeleaf templates for a Java backEnd. HTML css javascript
Oleksandr helped me quickly build a new website from scratch which looks modern and clean. He was able to understand quickly the requirements and was able to progress without much back and forth. I strongly recommend him. He's strong CSS/Javascript/Ajax knowledge helped me progress very fast. In less than one month I was able to launch the new website. Thank mate!
RB
Romain B.
Mar 28, 2022
Java Backend development for SaaS (6months+)
Sasha worked with us for 3 months, he did his work well and completed the project successfully. He has very good communication skills and understands what needs to be done quickly. We wish him the best for his future projects.
VD
V N Someswara Maniteja D.
Oct 25, 2018
Riddle recruitment
Maintains quality and deliver on time.
About Oleksandr
Senior Java developer | Finance | Banking | Fintech | Fortune 500 | PM
Kyiv, Ukraine - 12:48 pm local time
I'm a Senior Java developer with a solid computer science background and strong analytical, communication, and soft skills. With 14+ years of experience in the financial sector from Fortune 500 list, including working for the largest Swiss investment bank and an Swiss investment fund (as well as for other business domains like Auctions, Consulting etc.), I specialize in delivering high-quality web and enterprise applications tailored to your business needs.
💼 𝗪𝗛𝗬 𝗖𝗛𝗢𝗢𝗦𝗘 𝗠𝗘?
– 14+ Years in Finance / Financial / Fintech Development: Extensive expertise in building secure and robust systems for the financial industry.
– Full-Stack Proficiency: Skilled in Java, JavaScript, and TypeScript for seamless backend and frontend integration.
– Cloud Expertise: Proficient with AWS ( ECS, SQS, SNS, Batch, Lambda, Bedrock, RDS, EC2, CloudWatch, S3 etc.) for scalable cloud solutions.
– Comprehensive Technical Leadership: I also manage an Upwork agency, offering access to additional developers to scale your projects as needed.
🚀 𝗪𝗛𝗔𝗧 𝗜 𝗖𝗔𝗡 𝗗𝗢 𝗙𝗢𝗥 𝗬𝗢𝗨:
– Custom Software Development: Build scalable, secure, and high-performing web or enterprise applications using Java, Spring, and AWS.
– Design & Optimize System Architecture: Design robust and growth-ready systems with cutting-edge technologies.
– Front-End Excellence: Create intuitive, user-friendly interfaces using Angular / AngularJS, Vue / Vue JS / Vue.JS, React / React JS / React.JS, Knockout.js.
– Cloud Solutions: Implement cloud strategies with AWS services, ensuring cost-efficiency and scalability.
– Database Management: Expert in both SQL ( PostgreSQL, MariaDB / MySQL ) and NoSQL ( Apache Cassandra, DynamoDB ) for data-intensive applications.
💪 𝗦𝗞𝗜𝗟𝗟𝗦:
Programming Languages: Java 8 / 11 / 17, JavaScript, C/C++, PHP, Bash
Frameworks & Libraries: Multithreading, Spring ( SpringBoot, Spring Boot, Spring MVC, SpringMVC, Spring Data, Spring Security ), JPA / Hibernate / Kundera, Akka, JMS ( IBM MQ ), REST, SOAP, Swagger, OpenAPI, REST API, JAX-RS, JAX-WS, AspectJ AOP, Vaadin 7 / 14+ / Flow, JUnit, EasyMock, Solr, Apache POI, JDBC, JSP / JSF, Play Framework, JavaMail, JavaCC, Ehcache
Cloud & Infrastructure: AWS: ECS, SQS, SNS, Batch, Lambda, Bedrock, RDS, EC2, CloudWatch, S3, Docker, Hazelcast, Apache ZooKeeper
Databases: RDBMS: MS SQL Server, PostgreSQL, MySQL / MariaDB, NoSQL: Apache Cassandra
Version Control: Git, SVN, Mercurial
Front-End Development: Angular / AngularJS, Ionic, Knockout.js, Vue.js, jQuery, HTML5, CSS, Twitter Bootstrap, Highcharts, Node.js / npm, SockJS / STOMP
Build & Automation Tools: Maven, Gradle, Ant
Operating Systems: Linux, Windows
Cybersecurity: Web-security analysis, symmetric/asymmetric ciphers, PKI
Business Domains: Fintech, Banking, Finance, Investment Funds, Payments, Consulting, CRM systems for HR, Car Auctions, Video Streaming
👉 𝗙𝗲𝘄 𝘄𝗼𝗿𝗱𝘀 𝗮𝗯𝗼𝘂𝘁 𝗺𝗲
Fond of developing applications and services using Java Springboot, acting Java backend developer but also as Java Full stack developer. Also I started Upwork agency here and act as PM, feel free to hire more developers if needed!
🎯 𝗟𝗲𝘁'𝘀 𝘀𝗵𝗮𝗽𝗲 𝘆𝗼𝘂𝗿 𝗶𝗱𝗲𝗮 𝗶𝗻𝘁𝗼 𝗮 𝘀𝘂𝗰𝗰𝗲𝘀𝘀𝗳𝘂𝗹 𝗽𝗿𝗼𝗱𝘂𝗰𝘁.
Contact me to get started! 📨
Steps for completing your project
After purchasing the project, send requirements so Oleksandr can start the project.
Delivery time starts when Oleksandr receives requirements from you.
Oleksandr works on your project following the steps below.
Revisions may occur after the delivery date.
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Software is delivered