Hire Vetted Web Application Engineers at Upstaff - Page 16

All vetted software engineers you need to build AI, Web3, and data Products.
  • Dedicated Full-time commitment for long-term or Time& Material for shorter or ongoing support
  • Europe, Israel, LatAm, United States, Asia geography coverage
  • Remote and hybrid engagement
  • Trial period, no termination fees or hidden costs for transparent and risk-free onboarding.
C#
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- Over 4 years of experience developing and deploying complex web and mobile applications across diverse industries, focusing on integrating modern front-end and back-end technologies. - Proficient in front-end and back-end development, utilizing frameworks such as Blazor WebAssembly, ASP.NET Core, and modern JavaScript libraries to build robust and user-friendly applications. - Skilled in deploying and managing applications on cloud platforms, including AWS and Azure, with a solid background in using tools like GitHub Enterprise and SonarQube for code management and quality assurance. - Competent in integrating cloud services with existing applications, managing serverless solutions, and ensuring scalable and reliable infrastructure. - Experienced in building and optimizing APIs using RESTful and OData architectures and implementing front-end solutions with Blazor and .NET.
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PHP
NestJS
microservices architecture
TypeScript
React
...
Senior Full Stack Developer with a Master’s in Computer Science and a depth of experience in front/backend technologies across multiple domains. Practical knowledge of Python, Django, Next.js, NestJS, and a robust foundation in PostgreSQL. Proven capability in leading development projects, optimizing database schemas, and leveraging CI/CD pipelines with Docker and Kubernetes. Skilled in Agile methodologies, project management, and UI/UX design paired with a substantial background in IoT solutions, showcasing versatility and technical prowess. Recognized for streamlining operations, reducing costs through automation, and advancing retail technology platforms.
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Seniority Senior
Location Frankfurt, Germany
C/C++/C# 1yr.
ASP.NET Core Framework 1yr.
Entity Framework 1yr.
AWS Security Groups 1yr.
HTML
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Proactive software engineer with practical experience in C#, ASP.NET Core, Entity Framework, and JWT Security. Adept at full-stack development, illustrated by projects like a virtual wallet system and a gaming forum. Proven expertise in utilizing tools like Swagger, Zabbix, and Cloudinary, with particular success in integrating external APIs and optimizing cloud engineering workflows. Fluent in English and intermediate in German, with solid analytical and conflict resolution skills underpinning a distinctive ability to enhance team and customer experiences. Holds a Master’s in Software Engineering in-progress, with a foundation rooted in a Bachelor's in Software and Internet Technologies.
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Seniority Junior
Location Dobrich, Bulgaria
Python 2yr.
FDD
AWS ML (Amazon Machine learning services)
Unix
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A seasoned software engineer with a strong background in Computer Engineering from Cairo University, the engineer brings both a deep understanding of theoretical principles and a rich hands-on experience in multiple software domains. Key strengths lie in web and mobile development, embedded systems, and machine learning, underscored by expertise in Python, Django, React, and AWS among other technologies. The profile showcases a proven track record of designing, coding, and maintaining sophisticated software solutions, notably in the healthcare sector with enterprise software contributions. This engineer is recognized for a systematic approach to analysis, design, and implementation across the software development life cycle. Revered personal projects such as an embedded system for CCTV face recognition signify a blend of innovation and practicality. With professional fluency in English and Arabic and having completed an IBM Big Data Engineer Certification, the candidate stands out for versatile skill sets and distinguished technical mastery.
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Seniority Senior
Location Giza, Egypt
Node.js
PHP
JavaScript
jQuery
React
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With over 4 years of professional experience in software development, the engineer is proficient in full-stack technologies including Node.js, React, and PHP, complemented by substantial expertise in database management systems like MySQL and MongoDB. Demonstrated history of successful project execution illustrated by roles in the development of complex systems such as a RESTful chat system and an online car auction platform. Strong educational foundation with a Bachelor's in Computer Engineering and importantly, an impressive track record in leading projects, innovation in deployment of applications, and mentoring team members. Technical acumen is enriched by adeptness in LAMP stack, modern JavaScript frameworks, version control using GIT, and the implementation of cloud services and server management.
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Go 5yr.
PHP 5yr.
Symfony 5yr.
MySQL 5yr.
MongoDB 5yr.
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Software engineer with 5 years of professional experience in application development using languages and frameworks such as Golang, Symfony, and PHP. Demonstrated expertise in Go, PHP Frameworks, MySQL, Mongo, and front-end technologies including JavaScript, jQuery, and Ajax. Proficient in frameworks like Echo, Symfony 2, and Laravel, and familiar with web servers like Apache. Holds a BE in Information Technology from RGPV Bhopal and is well-versed in both Windows and Linux environments. Proven track record of project management skills with a focus on research, modular design, and hands-on implementation. Instrumental in developing payment gateway APIs, internal APIs, community websites, and performing database migration with a knack for optimizing SDLC and software development practices. Capable of leading teams, mentoring peers, and efficiently resolving technical challenges.
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Seniority Senior
Location Indore, India
JavaScript
TypeScript
Express
Node.js
Angular
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A senior software developer with over 3 years of expertise in MEAN stack development, skilled in JavaScript, TypeScript, and advanced web technologies including Angular 2x-13x, Ionic 5x-6x. Demonstrated experience in full-stack development, proficient in both frontend and backend technologies with a keen understanding of ExpressJs, Node.js, Angular, and React. Strong background in cloud services like AWS and GCP, and in employing version control with GIT/GITHUB. Established track record in working with databases such as MySQL and MongoDB, and integrating payment gateways like RazorPay, PayPal, and Stripe. Computer Science graduate from Jabalpur Engineering College with a firm foundation in DBMS, programming languages, and machine learning. Proven ability in leading the development lifecycle of software applications, optimizing for performance and scalability, and contributing to high-quality, reusable code.
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Java 6yr.
JavaScript 3yr.
C++ 3yr.
Go 2yr.
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Software engineer with extensive experience in the design, development, and testing of web services and desktop applications across fintech, telecom, e-commerce, banking, insurance, and education sectors. Technical expertise includes RESTful API development, client-server architecture, and internet-protocols, with proficiency in programming languages such as Golang, Java, JavaScript, PHP, and C++. Strong background in both the Software Development Life Cycle (SDLC) and in software test engineering, excelling in various testing methodologies including functional, GUI, cross-browser/platform, and integration testing. Adept in agile and test-driven development practices, the candidate brings a solid engineering education with a specialized computer science focus and hands-on experience with AWS, Google Cloud Platform, IBM Cloud, and Azure. Known for a problem-solving approach, efficient communication within teams, and contributing to QA through strategy, automation, and root cause analysis.
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Seniority Senior
Location Chernihiv, Ukraine
Ruby on Rails 5yr.
Vue.js
AngularJS
...
Accomplished Senior Full-Stack Software Engineer with a focus on Ruby on Rails development, boasting extensive experience in building scalable web platforms and mobile applications compliant with HIPAA regulations. Possesses a strong command of front-end and back-end technologies including Ruby on Rails, Vue.js, React.js, Angular.js, PostgreSQL, MongoDB, and expertise with various APIs and integrations. Proficient in implementing sidekiq for efficient background job processing and skilled in deploying applications on Heroku along with AWS services management. Holds a Master’s Degree in Software Development from Cherkasy Engineering and Technological Institute, underpinning a solid theoretical foundation with hands-on experience in the end-to-end software development lifecycle. Demonstrated leadership capabilities in architecting robust solutions and leading technical teams. Brings over a decade of industry experience across healthcare, financial, and social media marketing sectors.
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Node.js
React
.NET
React Native
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A seasoned Senior Software Engineer with a robust background in Computer Science from Menofia University, boasting extensive experience in backend and mobile solutions. Demonstrates deep expertise in cloud-native technologies, microservices architectures, and Agile project management methodologies. Strong track record in leading development teams, executing full SDLC, and elevating product quality through rigorous testing practices, including unit and integration tests. Advanced proficiency in a suite of technologies, including Node.js, React Native, AWS Services, Docker, and K8s, coupled with a commitment to best practices in software engineering, notably in database optimization, API design, and DevOps techniques.
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Seniority Senior
Location Alexandria, Egypt
React 7yr.
PHP 7yr.
Node.js 5yr.
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- Software Developer with over 7 years of experience - Experience with React over 7 years - Experience with React Native over 3 years, which included migration from Java to React Native and building a medical platform - Experience of work in mixed teams - Upper-Intermediate English
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Swift 7yr.
Go
OpenVPN
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- Motivated software engineer with 7 years of iOS development experience (Swift, SwiftUI, and Objective-C). - Over 30 App Store project launches for iOS/macOS, including VPN, OpenVPN protocols, and deploy VPN servers) - Comfortable in both sole developer and team player roles, team-lead experience - Back-end experience with GoLang (last two years) - Upper-Intermediate English - Available to start ASAP
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Seniority Senior
Location Kyiv, Ukraine
PHP
AWS
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- 11+ years of experience in web development and 4 years of experience in the Fintech domain. - Proficient in various PHP frameworks such as YII2, Laravel and Symfony. - Experienced in front-end technologies including HTML5, CSS3, SASS, LESS, and JavaScript. - Strong knowledge of APIs and integrating payment gateways (Crypto, APM, S2S). - Expertise in designing and developing secure web applications. - Familiarity with AWS, Microsoft Azure, and other cloud infrastructure management. - Proven track record of successfully delivering projects on time and within budget, receiving commendations for technical prowess, innovative solutions, and team collaboration. - Location: Poland - Available: ASAP
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Seniority Senior
Location Gdansk, Poland
.NET 7yr.
C#
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- 7+ years of experience as an .NET Software Engineer - A Full Stack Software engineer with strong knowledge of developing comprehensive solutions from scratch. Expertise in all phases of the software development life cycle (SDLC) - project analysis and planning, requirements analysis, architecture design, development, testing, deployment, and documentation. Using modern technologies that stream data between systems, customers, and partners during the project development process. - English: Upper-Intermediate
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Java
Java EE
Salesforce Lightning Framework
AWS Security Groups
Hibernate
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- Java Full Stack Developer with 8+ years of experience, specializing in Java, J2EE, Spring, Hibernate, RESTful webservices, Angular, and Oracle database. - Proficient in design and implementation of complex modules, with expertise in payment processing systems, workflow customizations, and performance optimization. - Successfully owned and delivered end-to-end modules, including handoff generation, auditing, and limit cutoff modules. - Significant experience with role-based authentication, CRUD operations, and integration with 3rd party systems using OAuth2 and PGP encryption. - Skilled in front-end development with AngularJS, creating responsive designs and utilizing tools like Jenkins and SonarQube for deployment and code quality. - Holds a Bachelor's degree in Engineering, demonstrating a strong technical foundation and commitment to continuous learning.
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JavaScript
React
Redux-Saga
jQuery
HTML5
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Full Stack Web Developer with hands-on experience in optimizing web application performance, particularly in eliminating N+1 queries and upgrading pagination systems to improve speed and efficiency. Proven track record with the Open Food Network optimizing app loading times by 4% and enhancing CI build times from 12s to 0.2s. Skilled in front-end technologies including JavaScript, React, and Redux, as well as back-end expertise in Ruby on Rails, MySQL, and PostgreSQL. Demonstrated proficiency in Git, GitHub, Heroku, and Netlify, alongside a strong foundation in Mobile/Responsive Development and TDD with tools like RSpec. Holds a Bachelor's degree in Computer Science and Engineering from Anna University and has completed a Full Stack Web Development Program focusing on advanced algorithms, data structures, and project-based learning with international teams. Actively volunteers as a mentor to junior web developers, emphasizing high-quality coding standards and performance optimization.
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Flutter 6yr.
Android 6yr.
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- 5+ years of experience in the IT industry - Code in multiple languages, with interest in Flutter/Dart, JavaScript/TypeScript/React/NodeJS and Ruby - Worked with Flutter since the initial release date - Fluent English - Fluent Arabic - Available ASAP
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Seniority Senior
Location Germany
Python 6yr.
Go 5yr.
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- 6 years of experience in IT - 5 years of experience with Golang - 6 years of experience with Python - Fluent English - Available ASAP
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Seniority Senior
Location Kampala, Uganda
PHP
...
- Experienced Software Engineer with 8 years of commercial experience in demanding environments, focused on producing cutting-edge systems for businesses. - Skilled in infrastructure cost optimization, Kubernetes, and Terraform. - Proficient in PHP, JavaScript, Golang, and various databases such as MySQL, PostgreSQL, and MongoDB. - Extensive experience with Amazon Web Services (AWS) and containerization technologies like Docker. - Strong background in computer science with a Master's degree in Computer Science. - Familiar with Agile and Scrum methodologies, as well as software development practices and SDLC. - Excellent communication skills and fluent in Ukrainian with advanced English proficiency.
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Ruby
Ruby on Rails
Git
SQL
Heroku
...
Accomplished Ruby/Ruby on Rails developer with over 5 years of experience and a strong background in computer science from Ivan Franko National University, class of 2013. Noteworthy expertise in complex system integration, big data processing, and SDLC for energy management, payroll, benefits administration, recycling, and food nutrients management applications. Proficient in a diverse technology stack including Ruby, Rails, Git, SQL, Heroku, Webix JS, AWS, and Capistrano. Demonstrated success in working with both start-ups and established enterprises in Ukraine and the USA, contributing to significant projects that are widely used by public organizations and private businesses, especially in the recycling and HCM domains.
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Seniority Senior
Location Lviv, Ukraine
Python 6yr.
...
- Python Software Engineer with 6+ years of experience in the IT industry - Fluent English - Beginner Dutch, German
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Seniority Middle
Location Amsterdam, Netherlands
Go 2yr.
JavaScript
Rust
Node.js
NestJS
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- 6+ years experience as a Software Engineer; - 2 years experience working with Go; - Deep abilities working with Rust; - Good knowledge of creating smart contracts; - 4 years experience working with JavaScript, React, Next.js, Redux; - Experience working with TypeScript; - 3+ years of experience working with Node.js; - Good skills working with NestJS; - Experience working with Python, Swift, Kotlin, Flutter, Express; - Experience working with AWS; - Experience working with PostgreSQL, MongoDB; - Good skills on team lead - led ~12 people; - Took part in all aspects of product design and engineering, from marketing, and business investigation to the MVPs for start-ups, pitch decks, and mock-ups; - Upper-Intermediate English.
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Python 4yr.
JavaScript 4yr.
Django
Flask
Node.js
...
A versatile Full Stack Software Engineer with five-plus years of hands-on experience in several phases of the Software Development Lifecycle. Notable strengths include proficiency in Python and JavaScript, expertise in backend development with Django, Flask, Node.js, and frontend projects using React.js, Next branding. Equipped with practical knowledge in deploying applications on cloud platforms such as AWS, Digitalocean, and Azure, and leveraging Docker and Kubernetes for containerization. The engineer has a solid foundation in database design and querying, using PostgreSQL, MySQL, Elasticsearch, and Redis as data stores. Adept in Agile methodologies, the candidate presents an impressive track record of implementing robust web services and maintaining REST APIs, with a penchant for mastering new technologies and complex problem-solving.
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AA RPA
UIPath
QA Automation
Python
Go
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- Seasoned RPA developer with over 8 years of experience, adept at designing, developing, and deploying automation bots using UiPath, WinAutomation, and Power Automate Flow. - Proficient in programming languages such as Python and Go, with a strong foundation in databases like MySQL and MS Access DB. - Comprehensive expertise in UI development and deployment, backed by a solid understanding of SDLC, version control with Git, and proficient use of JIRA and ServiceNow for project management. - Holds a BSc-IT degree from University of Mumbai and has worked with reputed organizations, contributing to significant projects that showcase an ability to collate requirements, execute thorough assessments and develop meticulous design documents, - Proven track record in module leadership at Happiest Minds and previous pivotal roles in large firms like JP Morgan Chase and Tata Consultancy Services. - Demonstrates a deep commitment to quality, skilled at working across multiple operating systems, and frequently engages with the tech community by developing applications and writing technical blogs.
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Ruby on Rails 6yr.
Ruby 6yr.
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- Full-stack Ruby developer with 6+ years of experience in developing both front-end and back-end components of web applications. - Has experience in front-end frameworks, including ReactJS, Angular, Vue3, and React Native. - Proficient in PostgreSQL and MySQL for database design, query optimization, and data storage solutions. Has experience with MongoDB. - Worked with AWS for deploying and managing applications in the cloud. Utilized Kamal for deployment automation and management. - Extensive experience with RSpec for writing test scenarios and ensuring code quality. - Skilled in using Grape for API development.
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Seniority Senior
Location Cherkasy, Ukraine
GCP 4yr.
Go 1yr.
TypeScript 1yr.
CI/CD 1yr.
Python
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Software Engineer with 4+ years of experience, specialized in backend systems, Rest APIs, and Blockchain solutions using Go, Typescript, and the Google Cloud Platform (GCP) ecosystem. Proficient in a range of technologies including Dart/Flutter for mobile development, as well as CI/CD, ReactJs, and NextJs for front-end solutions. Holds a BEng in Computer Engineering with ongoing MEng studies, emphasizing a strong foundation in theoretical and applied computer science. Track record of developing scalable mobile applications and optimizing performance, with notable contributions to projects such as the Mbelemama Mobile app and contributions to Bitcoin state representation (Utreexo). Adept in modern software developments practices, particularly focused on microservices architecture and cloud-native technologies.
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Seniority Middle
Location Bamenda, Cameroon
PHP 6yr.
JavaScript 6yr.
...
- Full-stack development with 6 years of extensive experience in back-end and front-end development across various industries, including healthcare, education, consumer goods, and hospitality. - Strong expertise in server-side programming with PHP, including advanced knowledge of PHP 7.x and 8.x. - Extensive experience creating responsive and user-friendly interfaces using HTML5, CSS, and JavaScript. - Skilled in modern JavaScript frameworks and libraries, including JQuery and Ajax for dynamic web applications. - Experienced in utilizing WordPress for content management and website development.
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Rust 1yr.
C/C++/C# 1yr.
Solana
Axum
Tokio
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Software Engineer with expertise in backend development, blockchain technology, and big data, boasting a solid foundation in computer science from Ukrainian Catholic University. Holds a strong junior/middle experience level, with hands-on Rust, C++, and a gambit of modern technologies such as Solana, Axum, and Kafka. Proven track record of developing robust solutions for cryptocurrency swapping and NFT architecture, time-series data manipulation, and digital media copyright solutions. Notable achievements include contributions to open-source projects, and winning a national programming tournament. Fluent in advanced software engineering paradigms and well-versed in real-time streaming and machine learning library development.
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Seniority Junior
Location Lviv, Ukraine
Rust
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- More than 17 years of commercial experience in IT; - Experience cooperating with clients worldwide and building products related to various spheres: e-commerce, real estate, custom CRM, trading, social media and many more. Product tech design and full cycle of development and support; - Deep experience in development web applications using Ruby on Rails, Rust, Java, JavaScript, Go; - Strong experience of AWS, Azure Clouds, Google Clouds; - Experience in team leading and CTO; - Upper-Intermediate English; - Available: ASAP.
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Rust
Solana
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- 8 + years experience in IT; - 5+ years experience working with Rust; - Good skills in creating smart contracts for Solana and NEAR Blockchains; - Experience in building a bridge to Casper Network; - Experience working with Filecoin, Zero Knowledge modules, and Fuel Blockchain; - Deep abilities with MySQL, PostgreSQL, MongoDB; - Experience working with Python, Java, PHP, Scala, and Spring; - Good knowledge of AWS ElasticSearch; - Experience working with Docker and Kubernetes (K8s); - Experience working with DeFi and DEX projects; - Deep skills with Apache Cassandra and Apache Spark; - English: Upper-Intermediate.
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Seniority Senior
Location Czech Republic
Rust 2yr.
Python 2yr.
Actix Web
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- 4 years of development experience, including 2 years of Rust development and 2 years of previous Python backend development experience. - Development and design of high-load fintech solutions using Rust and Python - Experience with Rust microservices (Actix Web, Rocket, AWS Lambda) - Upper-Intermediate English
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Seniority Middle
Location Kyiv, Ukraine
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