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  2. Software Architecture Freelancers
  3. (Current) Lithuania
  • $50 hourly

    • 5.0/5
    • (23 jobs)
    I'm a senior Java developer with 12+ years of backend development, team lead and architect. I have been working on a full product development cycle in big companies and startups. Can help with architecture and technology consulting. I participated in the development of several big and small products for the travel, digital, entertainment industries from the USA, Europe. ○ Backend: Java, Kotlin, Spring (Spring Data, Spring Boot, Spring MVC, Spring Security, Spring Cloud), Hibernate, JPA, Jooq, JDBC ○ DB: PostgreSQL, Mongo DB, Oracle DB, MySQL, Cassandra, Vector ○ API: Web and mobile API, REST, SOAP, gRPC ○ Delivery | Updates | Support: Bitbucket, Gitlab, Jenkins, Fastlane pipelines ○ Integrating with external services: Facebook, YouTube, SoundCloud, Branch.io, Intercom, Mapbox, OSM, Acquiring, BigQuery, Telegram and Slack bots, Apple Wallet, Google Wallet, OpenAI (Chat GPT, Vector Database, Embeddings, Assistants), ElasticSearch, etc.
    Featured Skill Software Architecture
    Business with 100-999 Employees
    Apache Tomcat
    Apache Kafka
    Spring Cloud
    Software Architecture & Design
    Spring Framework
    Spring Boot
    Business with 10-99 Employees
    Spring Data
    MongoDB
    AngularJS
    Java
    SQL
    Hibernate
    Kotlin
    Business with 1-9 Employees
    PostgreSQL
  • $88 hourly

    • 5.0/5
    • (2 jobs)
    Certified Business Central Developer and Solutions Architect with over a decade of expertise in Microsoft Dynamics 365 Business Central, both SaaS and On-Premise. A seasoned professional known for architecting and developing innovative solutions, including multiple products and add-ons featured on AppSource. Proven track record as a technical lead in significant projects, including the Lithuanian Localization for Business Central. Renowned for a deep understanding of NAV/BC version upgrades, technical and data migrations, and C/AL to AL conversions. Adept at integrating Business Central with a variety of systems and platforms, driving technological advancements and automation. Main Career Highlights: ❯ ArvyDev: Spearheaded innovative Business Central implementations, developed innovative upgrade tools that reduced migration time, and established a strategic partnership with Microsoft, driving a significant increase in project opportunities and enhancing client satisfaction and retention. ❯ Architected and Developed Solutions: Sole architect and developer of several Microsoft Dynamics 365 Business Central products and add-ons listed on AppSource, including a secure licensing module, Re-Rent module, Jobs module, and integrations with platforms like Scrive. ❯ Technical Leadership at Alna Business Solutions: Led the technical team in contributing to the Lithuanian Localization project for Microsoft Dynamics 365 Business Central, enhancing the solution's regional compliance and functionality. ❯ AppSource Achievements at Armada Dynamics: Successfully brought a large-scale solution with nearly 3,000 objects to AppSource, refactoring and eliminating over 60,000 errors to meet industry standards. ❯ Expertise in Upgrades and Migrations: Demonstrated expertise in complex version upgrades and data migrations, including transitioning from C/AL to AL, and migrating data across various Dynamics NAV and Business Central versions. ❯ Integration and Cloud Solutions: Extensive experience in integrating Business Central with cloud services and third-party platforms such as Azure Functions, SharePoint, Google Drive, AWS, and numerous financial and CRM systems. ❯ Innovation and Automation: Known for mastering emerging technologies and implementing automation strategies to enhance efficiency and streamline processes.
    Featured Skill Software Architecture
    Microsoft Dynamics ERP
    .NET Framework
    Azure DevOps
    Database Design
    SQL
    Software Development
    Microsoft Dynamics Development
    Software Architecture & Design
    Git
    Microsoft Windows PowerShell
  • $50 hourly

    • 5.0/5
    • (4 jobs)
    Experienced developer with a demonstrated history of working in the higher education industry. Skilled in Hibernate, Java, Groovy, Grails, and Android Development. Strong professional with a Master's degree focused in Computer Software Engineering from Higher School of Economics.
    Featured Skill Software Architecture
    C
    Linux
    Product Management
    Software Architecture & Design
    Team Management
    Agile Software Development
    Kubernetes
    Docker
    Redis
    PostgreSQL
    Spring Framework
    Apache Groovy
    JavaScript
    Vue.js
    Java
  • $120 hourly

    • 5.0/5
    • (9 jobs)
    🚀 𝑬𝒎𝒑𝒐𝒘𝒆𝒓𝒊𝒏𝒈 𝒀𝒐𝒖𝒓 𝑩𝒖𝒔𝒊𝒏𝒆𝒔𝒔 𝒕𝒐 𝑺𝒄𝒂𝒍𝒆 𝒂𝒏𝒅 𝑺𝒖𝒄𝒄𝒆𝒆𝒅 𝑻𝒉𝒓𝒐𝒖𝒈𝒉 𝑺𝒕𝒓𝒂𝒕𝒆𝒈𝒊𝒄 𝑬𝒏𝒈𝒊𝒏𝒆𝒆𝒓𝒊𝒏𝒈 𝑳𝒆𝒂𝒅𝒆𝒓𝒔𝒉𝒊𝒑 With over 18 years of experience driving transformative solutions, I specialize in helping startups and established businesses achieve their goals by aligning technology with business strategy. Whether you're scaling a SaaS platform, navigating product development challenges, or optimizing team performance, I offer hands-on leadership to ensure your vision becomes a reality. 𝐊𝐞𝐲 𝐂𝐚𝐩𝐚𝐛𝐢𝐥𝐢𝐭𝐢𝐞𝐬: ⭐ 𝐄𝐱𝐩𝐞𝐫𝐭 𝐢𝐧 𝐒𝐜𝐚𝐥𝐢𝐧𝐠: Delivered high-availability systems supporting millions of users daily. ⭐ 𝐂𝐨𝐬𝐭 𝐎𝐩𝐭𝐢𝐦𝐢𝐳𝐚𝐭𝐢𝐨𝐧: Reduced operational costs by up to 40% while improving delivery speed and quality. ⭐ 𝐋𝐞𝐚𝐝𝐞𝐫𝐬𝐡𝐢𝐩 𝐚𝐧𝐝 𝐓𝐞𝐚𝐦 𝐁𝐮𝐢𝐥𝐝𝐢𝐧𝐠: Built and managed high-performing, cross-functional teams across multiple industries and geographies. ⭐ 𝐏𝐫𝐨𝐝𝐮𝐜𝐭 𝐒𝐭𝐫𝐚𝐭𝐞𝐠𝐲: Translated business objectives into actionable technical strategies, ensuring smooth product launches and growth. ⭐ 𝐄𝐧𝐝-𝐭𝐨-𝐄𝐧𝐝 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐲: From ideation through MVP and full-scale product launches, I streamline your software development lifecycle (SDLC) for efficient, high-quality delivery. ⭐ 𝐂𝐨𝐦𝐩𝐥𝐢𝐚𝐧𝐜𝐞 𝐚𝐧𝐝 𝐑𝐢𝐬𝐤 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: Navigated complex regulatory software requirements (ISO, EU MDR, FDA) in critical industries such as healthcare, ensuring top-tier product integrity and security. I have a proven track record in guiding executives and founders through complex decisions, delivering outcomes that not only save time and money but position your business for long-term success. Whether managing EUR 30M+ initiatives in healthcare or reducing SaaS operating costs by 50%, my focus is always on delivering value and scaling sustainably. 𝐒𝐨𝐦𝐞 𝐡𝐢𝐠𝐡𝐥𝐢𝐠𝐡𝐭𝐬: 👉 Overseeing a 40-person team to deliver lifesaving software while achieving Class IIb compliance with rigorous global standards. 👉 Built an in-house development team from scratch, cutting costs by 50% and improving uptime to 99.98% for a SaaS platform supporting millions of users. 👉 Mentored senior engineers into leadership roles, preparing them to scale their organizations while maintaining delivery excellence. 🚀 𝑳𝒆𝒕'𝒔 𝒘𝒐𝒓𝒌 𝒕𝒐𝒈𝒆𝒕𝒉𝒆𝒓 𝒕𝒐 𝒔𝒄𝒂𝒍𝒆 𝒚𝒐𝒖𝒓 𝒃𝒖𝒔𝒊𝒏𝒆𝒔𝒔, 𝒐𝒑𝒕𝒊𝒎𝒊𝒛𝒆 𝒚𝒐𝒖𝒓 𝒕𝒆𝒂𝒎𝒔, 𝒂𝒏𝒅 𝒕𝒖𝒓𝒏 𝒚𝒐𝒖𝒓 𝒕𝒆𝒄𝒉𝒏𝒊𝒄𝒂𝒍 𝒄𝒉𝒂𝒍𝒍𝒆𝒏𝒈𝒆𝒔 𝒊𝒏𝒕𝒐 𝒄𝒐𝒎𝒑𝒆𝒕𝒊𝒕𝒊𝒗𝒆 𝒂𝒅𝒗𝒂𝒏𝒕𝒂𝒈𝒆𝒔.
    Featured Skill Software Architecture
    LLM Prompt Engineering
    OpenAI API
    Team Management
    Product Design
    Agile Software Development
    Project Management
    React Native
    Product Backlog
    Agile Project Management
    User Experience Strategy
    Product Roadmap
    Software Architecture & Design
    Next.js
    React
    Product Management
  • $30 hourly

    • 0.0/5
    • (1 job)
    🛠 15+ Years of Experience: Proven track record in software development, scaling SaaS platforms, and creating innovative tech solutions. 🚀 Co-Founder & CTO Experience, led tech and product strategies for startups like: - Cogastro (Startup of the Year, 2021), raised 700000 Eur - IZI Logistics (Featured in Lithuanian media), driving growth and building high-performing teams. Self funded 💻 Tech Expertise: - Backend Development: Extensive experience building scalable, reliable systems using JavaScript/TypeScript and Python technologies. - Architecture: Expertise in designing and implementing distributed, microservices-based architectures optimized for scalability and resilience. Infrastructure as Code: Skilled in Terraform to provision and manage infrastructure seamlessly. - CI/CD Pipelines & Automation: Proficient in designing and deploying CI/CD pipelines for efficient and reliable automated deployments. - Cloud Platforms (PaaS): Advanced AWS and Google Cloud knowledge for hosting scalable and secure solutions. - Frontend Proficiency: Strong experience with React and other modern frontend technologies to deliver user-focused designs. - Test-driven development: Ensuring stable product with comprehensive tests ⭐ Industry Experience, extensive experience in: - first-mile logistics - payroll connectivity - social networks - insect farming - applicant tracking systems (ATS) - automotive data solutions. Notable roles include Technical Lead at Argyle, which successfully raised a $2.6M seed round. 📊 Results That Speak: Built and scaled a logistics platform serving hundreds of users and developed SaaS products from the ground up, gaining recognition for robust, user-focused design. 🌍 Global Perspective: Multilingual (English, Lithuanian, Russian) and experienced in working with international teams and clients. ⏳ Why Now? I recently started building my freelance profile on Upwork. This is a new chapter in my career, and I’m offering competitive rates as I establish my reputation here.
    Featured Skill Software Architecture
    Testing
    CI/CD
    SQL
    Software Architecture & Design
    DevOps
    Full-Stack Development
    Back-End Development
    Python
    JavaScript
    Team Management
    Product Management
    Web Development
  • $75 hourly

    • 0.0/5
    • (0 jobs)
    I deliver innovative solutions for the banking sector, ensuring efficiency and seamless implementation. End-to-End Delivery: Managing projects from requirements gathering to production deployment. Banking Technology: Expertise in software and hardware solutions for ATMs and self-service devices. Innovative Solutions: Developing modern approaches to optimize operations and improve customer experience. Problem Solving: Providing scalable solutions for complex banking challenges.
    Featured Skill Software Architecture
    Payment Functionality
    Payment Gateway
    Mobile Device
    Software Architecture & Design
    BaaS
    Business Consulting
    Business Application Development Language
    International Development
    Product Development
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