Top 50+ Java companies

HeavyTask LLC is an IT consulting and solutions company headquartered in Dallas, TX. We create solutions for complex issues and challenges that business enterprises encounter daily. Our innovative team consists of pioneers in developing custom websites, enterprise software, mobile applications, and diverse digital products.

Afkae Studio is a Full Stack Design & Development House with over a decade of experience, having witnessed and contributed to technology's evolution from the ground up. Our unique approach to developing digital products blends a robust design methodology with the flexibility of an artistic creative process, centered around predictable and process-driven execution cycles. Our philosophy is to create unique solutions by clearly defining a problem or an idea. This allows us to harness the creative process effectively, ensuring that our solutions are both innovative and reliable.

==== Why Zain? ==== 1) We love what we do, some might say a bit too much, and we bring enthusiasm and commitment to every project we work on. We care about our clients and can often be found working out of hours to get everything 'just right'! 2) We listen, we discuss, we advise. Sounds obvious but we listen to your ideas, plans and objectives for your business. We then select the best solution to fit. We don't shoehorn projects and if we feel we're not a good fit we'll be honest and tell you from the outset. 3) We're dedicated to giving you the best service possible. And we'll prove it. We provide UNLIMITED revisions. We we will rework on the script / storyboard / animation / voice over until your team is fully satisfied with the final result. We pride ourselves in open communication and consistent follow-ups.

Alteum is a website designing and development company providing services to enterprises across the world. Our services are unique combination of user-friendly design and strong internet technology plans. We provide high quality on site services for software development and the end users on a broad range of hardware & software platforms and latest technologies. We also offer graphic design and Opencart development. Our work, client satisfaction, achievements records speak for us. We believe in long term relationship with our clients. Our philosophy is to achieve excellence in what we pursue and involve in process of fulfilling mutual needs and our focus goes on client satisfactions. We assure to deliver maximum value to our clients with an affordable prices.

Hilditonn is a software development company creating complex web and mobile solutions to cover even the most sophisticated business goals. Focused on our projects' quality we deliver code that is always maintainable and scalable to provide incredible flexibility and business growth opportunities. WE COVER: ☘ Native mobile & web development • Augmented Reality solutions for available platforms • Data Sync complex solutions between platforms • Microservices and module architecture integration and Cloud-based solutions Serving small-to-medium projects we dedicate a team to each project to ensure faster delivery and assistance in project release and further support.

Subera is a senior-level software engineering agency building production-grade backend systems, SaaS platforms, and scalable infrastructure for startups and growing companies. What We Do We partner with founders and product teams to design, build, and ship: - SaaS platforms (multi-tenant, subscription-based) - Backend systems (Go, Java, Spring Boot) - Distributed systems (Kafka, event-driven architecture) - AI-powered features (LLM integration, RAG, automation) - High-performance APIs (REST, OpenAPI-first design) - Cloud-native infrastructure (Docker, Kubernetes) - Database architecture (Postgres, Redis, ClickHouse, Opensearch) - From clean architecture to deployment pipelines, we build with long-term ownership in mind. Who We Work With We’re a strong fit for: - Seed to Series B startups - EU-based product companies - Founders who care about architecture - Teams rebuilding legacy systems - Companies preparing for scale or compliance Our Approach We follow a deliberate engineering process: - Clarify business problem - Design architecture before coding - Build in small, production-ready increments - Document and test properly - Deploy with observability and monitoring Why SuberaHQ? - 10+ years engineering experience - Senior-level backend expertise - Real distributed systems experience - Clean, maintainable codebase design - Clear communication (EU time-zone friendly) - Long-term thinking, not short-term patches Technologies We Use Backend: - Go (Fiber) - Java (Spring Boot) - REST + OpenAPI-first APIs Infrastructure: - Docker - Kubernetes - CI/CD pipelines - DigitalOcean / AWS Data: - PostgreSQL - Redis - ClickHouse - Opensearch Tools: - RabbitMQ - Kafka - Debezium - MQTT - Temporal AI: - OpenAI integrations - Vector databases (Weaviate) - AI-assisted workflows Engagement Model We offer: - Dedicated engineering support - MVP architecture & build - System redesign & refactoring - Technical audits - Long-term engineering partnership We prefer structured, milestone-based engagements with clear scope and accountability. If you’re building something serious, let’s build it properly.

We are accepting top talent only. You must provide expertise level portfolio for review. You must have good work ethic and honest traits. We care about the client and so should you.

Has Experience in Big Data, Data Visualization using Tableau, Microstrategy, PowerBI. Experienced in Cloud technology, architecting. Design & implementation of software applications. End to end development of software application and deployments. Experienced as project managing and delivery with utmost quality of deliverables.

Delivering software reliable and scalable software using Agile SCRUM and Java stack

Welcome to our company profile. We are a bunch of experienced IT professionals. We understand Information Technology & work as Solution Provider. We like to work in a challenging environment and are always looking for new technologies expertise. Thus, we like to work on different projects & ideas. Our main working domain is web development & mobile development. We can help you with following technologies- Web Technologies Angular JS, Node, Php, .Net, Java, Zend Framework, MongoDB, HTML5, CSS3, Javascript, jQuery, XML, JSON, MySQL, Web Services, Soap, Rest Services, Wordpress CMS, Laravel GitHub & Bitbucket and PostgreSQL What experience do we have - Custom PHP development - Development on the basis of frameworks - WordPress development - Integration with third-party services, solutions - API integrations - Working with SQL / NoSQL databases - High load web application architecture design and development - Code and architecture audit - Refactoring - Server side solution implementation Mobile Technologies iOS Development (Objective-C) and Android (Kotlin) Server Configuration Linux, Ubuntu, Amazon Web Services (AWS) What we can do for you - Web admin & websites for your business - WebServices for your mobile applications - Beautiful iOS and Android Applications - Products (Shopping Cart, ERP, CRM, Customizations) - Manual & Automation Testing - Research & Development for your new ideas - Server and Hosting Configurations - Code Optimization Feel free to contact us anytime. We are available around the clock.

Your next step, us. Zipper Studios Co. is a Cluj-Napoca-based award-winning mobile development studio that specializes in developing stunning custom native mobile applications on Android and IOS. Our mission is to create unique, digital experiences for brands who are prepared to make an impact. Our collective experience ranges from design, UX/UI, testing and researching, to brand positioning and development. We strive to make the best products for our customers, leaving a signature on the industry and the people we work with. Having a vast experience across several technologies and a continuous growing team, we provide a large variety of services for our clients from all over the world. We aim to grow together with our customers through the applications we build and design from scratch. We focus on the user experience and their interaction while maximizing the efficiency of the business. We will never settle for anything below our costumer’s needs this is why we provide fast turnarounds with sharp updates and a comprehensive feedback. We create and power immersive mobile experiences to engage and inspire. Our work emphasis on dynamic, immersive and scalable applications for all kind of businesses.

Years of experience in project and quality management taught us many valuable lessons. While working with clients and other outsourcing companies we’ve encountered various breaking factors and always took the opportunity to analyze them carefully. We discovered a set of principles that we organized into two main working strategies: Refined Requirements Definition & Estimation Process and Development & Communication Framework. The synergy between those two allows us to avoid mistakes, enables transparency in our work and maximizes the value that outsourcing brings to our partners’ organizations. Refined Agile Methodology In our work, we use a blend of traditional Requirements Engineering Practices coupled with modern Agile Methods. In our experience SCRUM with few adaptations proved itself to be the most efficient model that brings faster and more reliable results with substantial documentation. We use it as a base for shaping the cooperation with our clients unless preferred otherwise. Test Driven Development & Continuous Integration Each time a new feature is being developed, the process starts with analyzing and understanding the requirements and writing a unit test first. This way each new line of code is written to pass the test and becomes a small and certain step toward the result you need. Following CI principles, changes are integrated into the shared repository often and early. This way we avoid integration problems and save time and money. Modern Workforce Management Tools In outsourcing, communication and punctuality is the key to seamless cooperation. So is data safety. For managing projects as well as internal and external communication we use latest Microsoft products. Their collaboration and workforce management tools are a substantial part of our success as a business partner.

We are the team of enthusiastic developers who are ready to work with you effectively. We promise you that our work will be done in time and with good quality. We've got more than 7 years of experience in Java, Ruby on Rails, Drupal, Liferay and we like working with React JS, React Native, Angular JS, Javascript, CSS3, AWS, too. Our team consist of middle and senior front end, back end, full stack developers, projects managers, QA and devops. All of our members are able to understand written and verbal instructions in English. We have extensive experience with - iOS development - Android development - Web: HTML, CSS, Boostrap, SASS, JQuery, React, Angular, etc - React, Angular, Node.js - E-Commerce: Woocommerce, Prestashop, Shopify, Drupal Commerce, etc - CMS and Portals: Wordpress, Drupal, Joomla, Liferay, Websphere - PHP Full stack (Laravel, Symphony, CodeIgniter, etc) - Java Full stack (JEE, JSF, Hibernate, Tomcat, Wildfly, etc) - Ruby: Full stack (Rails, Sinatra, Padrino, etc) - Geographic Information Systems (Openlayers, GeoServer, PostGIS, Web mapping) - Web Services: REST, SOAP, etc - Business Intelligence: Pentaho - Big Data: Hadoop, Hortonworks Our team has been involved in many different and successfull projects. Contact us and we will send you our portfolio. Please visit us at zuomy.uy

Excode Solutions Private Limited is a team of 7 experts specialised in Design, Development and Testing, * We have an expert UX and UI designer with an experience of 12 years. * Expert Developers who excel in wide range of Web and Mobile applications. * Testing Team who have an experience of 4 years and working knowledge in both Automation and Manual Testing process. We undertake both short-term and long-term projects . We keep ourselves updated with the latest technology and have potential knowledge in wire-frames in order to easily analyse customer requirements and provide prolific results by meeting their needs. We offer services to people around the world as we work round the clock..

Apeiron is a growing software development agency doing product engineering , Web , cloud development using PLATFORMS LIKE AWS, Microsoft etc. We have experience in information technology with an emphasis on application development, demonstrated experience with applications development throughout the software development lifecycle. We are a team of professionals offering best solutions to clients across the Globe. Our commitment to quality and adherence to class has established us as one of the top software providers on upwork. Why choose Apeiron? - 100% Client Satisfaction - Excellent Code and Service Quality - Reliable and Cost Effective Services. - Stellar Maintenance Support - Security and Integrity of Data - Strong Technology Competency. We believe in delivering excellence hence We will use all best of my knowledge and skills in order to make sure of this!!

We are a fine-tuned team of 50 dedicated experts working in-house & full-time. Jappware offers a full-cycle solution development process - from idea to release We always ask “Why” and “What for” to develop solutions based on your business needs rather than trends Head areas of expertise: - Complex Web apps & Distributed systems development - Big Data & Cloud solution, Serverless and Reactive approaches - Mobile Apps development - AI & Machine Learning Facts about Jappware: ❖ founded in 2017; ❖ over 30 in-house employees; ❖ 20+ successfully completed projects with a total budget of more than $1,000,000 CORE TECH-STACK: ♢ Back-end Java/JEE (Spring Framework, JAXB, JSP, JSF, Lombok, Freemarker, Velocity, Thymeleaf, JBehave, Thucydides/Serenity, Grails, Asciidoctor, Angular), Apache Groovy, Golang, NodeJs, Python (Django, Pandas) ♢ Front-end: JavaScript: Redux, Redux thunk, jQuery; Vue.js, Next JS, React JS ( React Router, Material UI), Angular JS, TypeScript; HTML5, CSS3, Scss, Css modules. ♢ Mobile: React Native, Flutter, Redux ♢ Clouds Azure, AWS, Heroku, GCP ♢ SQL and NoSQL Databases PostgreSQL, InfluxDB, DynamoDB, MongoDB, Cassandra, TimescaleDB, MySQL, MSSQL, H2, Prometheus, SQLite ♢ General Architecture: Multithreading, Microservices, Distributed Caches, Serverless, Design patterns, REST, gRLC, GraphQL, etc. DialogFlow Metodologies: Agile, Kanban Tools and services: RabbitMQ, JMX, AMQP, Kafka, Spark, Flyway, Postgress, Databricks, Jenkins, Confluence, JIRA, Azure DevOps, TestNG, Mockito, RestAssured, MockMVC, Apache JMeter, SoapUI, Selenium, Postman, JUnit, Docker, Gradle, Terraform, CloudFormation, Maven, Git (GitHub, bitbucket, GitLab), JVisual, Bitbucket, 3rd party integrations, Intellij, Eclipse, STS, JavaFX, Nginx, ECS, CloudFormation, CloudWatch, VPN, S3, VPC, IAM, CloudFront, EC2

Software SARL agency offer a resource mix of 9 employees, IT architects, chief developers and project managers with highly qualified developers.

We are specialize to build the web/mobile applications and provide support for small and medium size business. Our team handles HTML5, BootStrap, CSS, ReactJs, Redux, React Native, Hybrid mobile applications(iOS, Android), Java, J2EE, Rest services, Spring Boot, Spring MVC, Hibernate, JPA, JSF, EJB, Angular JS(1/2/3/4/5/6), QA Automation, Selenium, Appium, Devops, Jenkins, Python Programming, AWS , Amazon Alexa , .Net Framework, Asp.Net, C# , SailPoint , Salesforce , DB2 LUW Administration and many more. All Work completed by us, So you can rest assured knowing that your work will not be outsourced to someone else. And Regular communication is important to us to fulfill the gaps in project requirements and status updates. we ensures the project is completing on time and not missing any requirements. We feel pride to complete the work on-time with high quality and 100% client satisfaction. we believe in team work and we all are quick learners to getting update ourselves to work on new tools or domains.

Hello! We are a very small, 2 person, mobile app development agency in the Cincinnati Ohio area. We are new to Upwork, joining in October 2018, but have been working in the mobile space since 2015. Our focus is in native implementation via Android Studio and Xcode. We have experience working with many APIs/toolboxes and are always interested in learning new ones. We pride ourselves on clean user friendly design and customer service. We think of our customers as partners and are invested in all the work put out. We look forward to working with you on your mobile projects.

We are Pentabay Softwares Inc, Canada's leading software (Working hard to catch the spot, Working harder to be in clients no 1 spot) development company headquartered out of Oakville, Canada. We also have our physical presence in USA and India. We are proud to say that we are one stop shop for all your Software needs ✅ Highly Rated in Clutch ✅ Excellent Reviews in Google ☑️ OCJP Certified Developers ☑️ MCSA – Azure Cloud ☑️ AWS Certified Solutions Architect ☑️ AWS Certified Developer ☑️ AWS Certified SysOps Administrator ☑️ Scrum Certified Coach ☑️ Dynamics CRM ☑️ Dynamics NAV ☑️ Dynamics Business Central ☑️ PMP, PMI, US - Spring, Microservice, Spring Cloud specialist - DevOps Engineering - Experts in Jenkins, Build pipeline, Dockers, ECS - PHP, Wordpress, Laravel - SEO Optimization, Digital Marketing, MailChimp Integration - Data Analytics - Mixpanel, Segment.io, Intercom, Pushwoosh etc - Expert in Intercom, Pushwoosh integration - Experts in Lead Generation - Dynamics Business Central - Dynamics AX/Finance and Operations - UI/UX, HTML/CSS, Angular - Swift (iOS), Java (Android), React Native (Cross Platform) - NodeJS, ReactJS - Azure/AWS Cloud Architects Specialities - Banking/Financial/Ecommerce/Timesheet Product/Wordpress etc - Fintech Applications - E-Learning Applications - Complex API Integrations - QuickBooks, Xero, Tally Accounting integrations - Multi product integrations - Microsoft Dynamics 365/CRM and Navision Implementation If you are a startup or a new enterprise building a product, Let's Talk ! We work closely with startups helping them build their dream product thereafter helping them build, deploy and market their product. Pentabay is a 70+ people team with development centre in Chennai, India Toronto Canada and Pennsylvania USA.