Hire the best Unit Testing Specialists in Warsaw, PL
Check out Unit Testing Specialists in Warsaw, PL with the skills you need for your next job.
- $55 hourly
- 5.0/5
- (3 jobs)
I'm a Senior Software Engineer with over 9 years of experience, I have gained extensive expertise in designing and implementing high-quality software solutions that meet the client's business requirements. Throughout my career I was working on multiple projects, here I'm sharing three of the most challenging ones: At UBS (a Swiss bank with a $60bln capitalization), I was a Senior Java Developer, and I was responsible for developing a regulatory reporting engine to handle dozens of millions of transactions the bank processes daily. This project was part of implementing their new business requirements around designing a project on an entirely new event-driven technological stack. There were several main challenges that I faced when designing and implementing the system: 1. System should handle millions of transactions per day that have to be reported in a timely manner. 2. System should be tolerant to hardware failures, including the loss of the entire data center. 3. Around 40 developers should be able to work on the project productively with minimal conflicts. 4. Correctness of reporting is essential – every introduced bug can have disastrous consequences – the system should have checks in place that prevent buggy code from being deployed to production. 5. Transaction reporting domain is very complicated, and business requirements are frequently changing. System design should be flexible enough to adjust to the required changes. 6. There are multiple stakeholders involved; each has different requirements for the system. At Denario, a fintech startup, I worked as a Senior Java Developer, assuming full responsibility for designing, developing, deploying, and maintaining the application and DevOps tasks. The main challenges in the projects were: 1. Developing a high-performance system 2. Integrating with multiple Open Banking providers 3. Ensuring the platform was scalable, fault-tolerant, and highly available 4. Ensuring the platform was secure and user data was protected 5. Collaborating with the product team to design features that met users' needs 6. Maintaining the platform and fixing issues that arose in production 7. Assuming full responsibility for the end-to-end software development process At the Ministry of National Defense of Poland, I was a Team Leader and Technical Leader responsible for providing e-learning solutions for hundreds of thousands of users. My role involved leading a team of developers, analysts, and testers to develop and maintain a learning management system. I have experience working with a variety of technologies, including: Java, Spring Framework, Spring Boot, Hibernate, JUnit, Spock, Apache Flink, Kafka, PostgreSQL DB, Oracle SQL DB, Elasticsearch, Microsoft Azure, Kubernetes, AWS I am passionate about software development and strive to stay up-to-date with the latest trends and technologies. I am dedicated to delivering high-quality solutions and exceeding client expectations.
Unit Testing
APISpockJavaSpring FrameworkJUnitLinuxApache KafkaSQLBash ProgrammingSpring BootLinux System AdministrationBash - $98 hourly
- 4.0/5
- (16 jobs)
💻Senior Blockchain Solidity Smart Contracts Engineer and Auditor with exceptional Experience💻. Ask for my CV!📄. 🛠About me: 🔭 Artizen.Fund Early Adopter. ⛓ OpenArtMarket.com Pioneer Solidity Smart Contracts Developer. 📊 AngelBlock.io Early Investor. ✅I have great experience working on Complex N.F.T.s Projects and Platforms, including N.F.T.s linked to Real Life ArtWorks. ✅Low Gas Consumption and Security are my Crucial Focus when Developing and/or Auditing Smart Contracts. ✅I Developed projects for +13 clients on UpWork with an average rating of 5/5. 📈I always define Clear Scope projects and I prefer to establish Long-Term Business Relationships with Clients when possible.📈 -⛓⚙️🔧I can help you with the Development, Modification and Auditing and Deployment on Ethereum/Polygon/B.S.C./ETC of Smart Contracts in Solidity like: ⚙️ Ethereum ERC-20/B.S.C. BEP-20 Tokens. ⚙️ NFTs (ERC-721/ERC-1155) either Single or a whole Collection with its own Generative ArtWork and MetaData, Minting, Selling, Pre-Sale, I.C.O. Smart Contracts and more!!!. ⚙️NFT Games Smart Contracts. ⚙️ Integrations with De.Fi. Protocols. ⚙️ ERC-777 Tokens. ⚙️ ERC-884 Tokens. ⚙️ DAOs. ⚙️ Auditing Solidity Smart Contracts in Search of Safety Vulnerabilities, Gas Spending and Implementations of Good Practices. ⚙️ Add I.P.F.S. Technology to your Project. ⚙️ And More!!! The Moon is the Limit, just ask about the features that you want😉. 📓My Skills Include Javascript, Typescript, Solidity, Git Console, Hardhat, Truffle Suite, Ethers.js, Web3.js, Open Zeppelin Library, Unit Testing(with Mocha & Chai), Slither and Mythril, ChainLink and I.P.F.S Client as Main Skills; HTML5, CSS3, Bootstrap 4, Material-UI, SASS, React.js Hooks, Redux and Vue.js on the Front-end and I also have Basic Knowledge in Node.js, Express.js, MongoDB and Mongoose on the Back-end as Secondary Skills.📓 📓I have knowledge of Full Stack Web Development but I prefer to Specialize in Blockchain and Solidity Smart Contracts Development Technologies.📓 🎈I think there is nothing better than a "Let's do it!"🙌🏼 attitude when working with a good team on a project. 📔I feel very comfortable teaching things to others and could even lead teams. 📈Passionate about Investments, E-Sports and Economics. 📚I am very ambitious and curious and I am continually learning new things. ✔️See my (public) work and projects:_ ⛓GitHub:_ Nachoxt17 🖥LinkedIn:_ Ignacio Ceaglio ⚙️Let's proceed to establish the Details, Requirements, Payment Schedules and Delivery Times of your Project in an UpWork Contract, and then activate the 1st Milestone, so I will be committed to your project.⚙️ ⚠️IMPORTANT⚠️: If you want me to estimate a Fixed and Accurate Time and Cost for the Development of your Project, I will need you to Provide me with Equal Accurate and Fixed Details about the Features and Requirements of your Project, and that we write them in detail in the UpWork Contract before we Start Working along with the same Detailed Payment Schedule.
Unit Testing
Startup ConsultingBlockchain, NFT & CryptocurrencyTruffleBusiness with 1-9 EmployeesReactHTMLEthereumTypeScriptJavaScriptSmart ContractBlockchain DevelopmentBlockchain SecuritySolidityweb3.js - $40 hourly
- 5.0/5
- (0 jobs)
I am a seasoned Full Stack Developer with expertise in React, Angular, Vue.js, Node.js, Ruby on Rails, and Python and a diverse range of experience across multiple industries. With a strong foundation in web development and expertise in both front-end and back-end technologies, I have successfully delivered end-to-end solutions for various clients in industries such as e-commerce, finance, healthcare, and SaaS. With a strong foundation in web development, I excel in designing and implementing scalable, efficient, and user-friendly applications. Additionally, I have a solid understanding of cloud platforms, including Amazon Web Services (AWS) and Google Cloud Platform (GCP). Passionate about staying up-to-date with the latest industry trends and technologies. I am a fast learner, adaptable, and capable of quickly grasping new frameworks and tools. I am a collaborative team player and possess excellent communication skills, enabling effective collaboration with cross-functional teams.
Unit Testing
TwilioGitDockerMongoDBSQLHubSpotGoogle Cloud PlatformAmazon Web ServicesVue.jsPythonRuby on RailsNode.jsReactAngular - $13 hourly
- 0.0/5
- (0 jobs)
Result-oriented and highly motivated iOS developer with 1+ years of experience in building mobile applications. The main technology stack is built on Swift programming language and popular iOS frameworks (Have been working with numerous architectures: VIPER, Clean SWIFT, MVVM+C, MVVM). Enjoyed working a lot with Coordinator pattern. Have been working with complex tables (with collection views + different size cells in it). Have a little experience with RxSwift and writing Unit/UI tests. Understand Agile methodologies and throughout my work experience has managed to establish myself as a purposeful and responsible team worker, ready to help at any time. Always ready to help and discuss any issues or suggestions regarding projects!
Unit Testing
XCUITestJSONClean ArchitectureAPIMobile AppVIPERGitiOS DevelopmentiOSUIKitAlamofireSwift - $20 hourly
- 0.0/5
- (0 jobs)
* Strong background in OOP, Java 8-11 * Experience with Design Patterns * Designing software architecture; * Experience with Spring Boot, Spring Native * Experience with containerization Docker & Kubernetes * Experience with integration and unit testing * Ability to write clean code * Experience with Kong API Gateway * Experience with message brokers such as Apache Kafka * Experience with CI/CD (GIT, Gradle, Maven etc.) * Experience with agile/scrum development methodologies and management * Experience with RDB & NOSQL DB * Capable of quickly learning * Maintain good communication
Unit Testing
AWS DevelopmentFastAPIApache KafkaOracleAmazon EC2MySQLPythonPostgreSQLDockerSQLSpring BootJava - $12 hourly
- 0.0/5
- (0 jobs)
You are here because you want your iOS app to work seamlessly. You know that lack of great functionality is the #1 reason apps get 1 star ratings. You know that even the greatest app in the world can go unnoticed without someone to constantly maintain and care about the good code behind it. But you don't want only "good". You need GREAT. You want an iOS app that makes people fall in love with the idea behind it. An app that turns mildly interested customers into users per life. You know the stakes are high and deadlines are tight. As a developer, I am all about the i-word. No, not just "iOS". APPS You can hire me to create high-quality apps for: + Medical and Health Industries + Social Media + Music industries + Small businesses + Transport Businesses Whether you want to land a new version of your app, or start from ground zero, I will get you the results you want. AND I will do it in a way that leaves your users smile. How can you be sure? Take a look at the Portfolio on my profile. Those are all real, and there are plenty more if you want to see. But some things you only discover by taking the leap. However, hiring someone you don't know to do work on a project that can make or break your business... that's one hell of a leap. I get it, it's an incredibly tough call. Were I in your position, I'm not sure I'd go through with it. So here's my promise to you: once you hire me, and I roll up my sleeves, I take ALL the risks. You will love my work, or I give you your money back. Simple as that. If I ever get my hands on a time machine, I'll give you your time back as well. But for now, just the money. Before you commit, ask yourself: do you think I'd be a good fit for your project? If the answer is yes, great -- I hoped you'd say that. Let's talk! All you need message me, and you'll be able to get in touch with me. I would love to hear from you !
Unit Testing
Object-Oriented ProgrammingFunctional ProgrammingApple HealthKitModel View ViewModelApple Watch ApplicationApple XcodeiOS DevelopmentSwift - $30 hourly
- 0.0/5
- (0 jobs)
I’m a developer with experience in building websites for small and medium sized businesses and especially, education. I've ever participated into a AI school project. Whether you’re trying to win work, list your services or even create a whole online store – I can help! I’m experienced in MERN Stack and Software Architecture. I’ll fully project manage your brief from start to finish Regular communication is really important to me, so let’s keep in touch!
Unit Testing
MATLABSequelizeReactNode.jsVue.jsLaravelSoftware Architecture & DesignMySQLMongoDB - $15 hourly
- 0.0/5
- (0 jobs)
👋 Hi there! I'm Sergei Moshko, a passionate frontend developer of experience driven by the thrill of transforming complex designs into interactive experiences. With 4 years in the tech scene, I've honed my skills primarily in TypeScript, React, and Angular. 🌐 Equipped with a Bachelor's in Automated Data Processing Systems from Belarusian State University of Informatics and Radioelectronics, I'm not just about code. I'm about creating solutions that resonate. Fluent in Russian with practical knowledge of English, Polish, and a dash of Spanish, I'm as global as the applications I help to craft. 📚 Feel free to contact me!
Unit Testing
Demo VideoHTMLCSSSassMaterial UIKendo UIReduxRxJSJavaScriptTypeScriptReactAngular Want to browse more freelancers?
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