Olena I.

We build scalable systems using Java and Python that grow with your business - from launching strategic prototypes for startups to optimizing complex distributed systems for enterprise-level operations. $1M+ earned | 100% Job Success Score | 3,500+ projects | 32+ years in Software Development. We specialize in high-load architectures, cloud migrations, and complex ERP systems. We help turn validated concepts into market-ready products that drive revenue, and we assist in stabilizing legacy systems, improving stability, and reducing technical debt. 🚀 Achievements: ✅ Launch MVPs/prototype in 8-12 weeks with a focus on core market validation. ✅ Reduce Activation Time by 60% for IoT and device management systems through streamlined Java-based and cloud workflows. ✅ 10x Acceleration of Management Flows in Fintech and Education platforms via automated onboarding and legal agreement templates. ✅ Increase Active Users by 30% through performance optimization and stability improvements in high-volume server management apps. 🛠 Core Services: 🔹Full-cycle Backend Development: Scalable systems, from POC/MVP to Enterprise. 🔹Staff Augmentation & Dedicated Teams: Seamlessly extending in-house capabilities with Java and Python experts. 🔹Legacy Modernization: Taking over existing system to refactor, stabilize, and enhance performance. 🔹Cloud & DevOps Integration: Migrating systems from and to AWS/Azure/GCP for cost-optimisation and flexibility. 🔹Ongoing and post-production support, ensuring that your product continues to grow and adapt to user feedback or new market updates. 📊 Notable project outcomes include: ✔Fintech & Education: Built a robust administrative portal that accelerated user onboarding 10-fold and supports 2,000+ daily active users. ✔Healthcare & Life Sciences: Developed an AWS-powered platform for clinical trials, improving data collection accuracy and resource utilization. ✔Supply Chain & IoT: Created a blockchain-based monitoring platform using Python/Django, tracking chain-of-custody for pharmaceutical products across multiple continents. ✔ERP & Enterprise Portals: Architecting complex systems for social networks and community platforms with integrated payment systems. 🔑 Technical Capabilities: ➜ Languages & Frameworks: Java (Spring Boot, Hibernate), Python (Django, Flask, FastAPI), Node.js (Express, Koa). ➜ Databases: MySQL, PostgreSQL, MongoDB. ➜ Infrastructure: AWS (Lambda, S3, EKS, RDS), Azure Data Factory, Docker, Kubernetes. ➜ CI/CD & Testing: Git, Jest, Karma, Mocha, Jenkins, GitHub Actions. We utilize AI where it adds measurable value, reducing operational time by up to 50% without compromising architecture decisions, cybersecurity, or code quality. Why Clients Choose NIX: 🏆 32+ years in Enterpise Development | 3,500 projects | 100% Job Success. 🛠 Full-Cycle Expertise: From bold idea to enterprise-level application. ⚡ Fast & clear communication: Always aligned & transparent. 📩 Available to start immediately. Let’s set up a free discovery call where I’ll help you evaluate your idea, define the right strategy, and outline a roadmap to bring your product to life.