Daniel Bulic

Freelance Full Stack Software Engineer & Consultant

About

Hello, I am Daniel, a freelance full-stack software developer and consultant with over 8 years of experience in developing scalable, high-performance web applications and services. I specialize in accessibility in web applications and have developed fully automated tests for this purpose. I have experience in Angular, Spring Boot (Java/Kotlin), Node.js, and DevOps practices. My Service includes: ..- Consulting on accessibility, provide information and guidelines ......- How developers implement accessibility (with Angular, React.js, Vue.js, Next.js, etc.) ......- How accessibility is tested automatically from end to end ......- How this can be integrated into the CI/CD pipeline. ..- Consulting and development of web applications with Angular. ..- Consulting and development of REST APIs with Spring Boot. I have delivered complex and innovative solutions in industries such as IoT, energy, financial services, and digital transformation. My expertise includes ensuring code quality through refactoring, applying the test pyramid, and integrating CI/CD pipelines. I am passionate about building future-ready technology, with a strong commitment to clean architecture, performance optimization, the continuous adoption of best practices, and staying at the forefront of modern frameworks and technologies.

Country

Germany

City

Karlsruhe

Industry

Information Technology & Services

Skill

Cloud Computing, Confluence, Jira, Docker, Rancher Kubernetes Management, MariaDB, PostgreSQL, Postgres, Mockito, Husky, Prettier, Jasmine, Karma, Liquibase, Flyway, npm, Redis, Sonarqube, OAuth, Open API

Experience

Freelance Full Stack Software Engineer & Consultant

Daniel Bulic

2024-7 - Present · 2 yrs 3 mos

- Optimization of web apps for search engines (SEO), performance and accessibility - Implement automated end-to-end tests for accessibility - Performance optimization, reduced total API Calls by 50% using a caching logic with Angular Signals - Implement a mobile-first design and optimize the page layout for mobile devices, tablets, and desktops - Contribute to open source projects - Technical consulting and analysis of existing systems and future requirements - Independent development, planning and implementation of IT concepts and solutions - Industry: Digital Transformation

Senior Consultant

Exxeta

2024-1 - 2024-6 · 6 mos

Karlsruhe, Baden-Württemberg, Germany

- Internal Coaching for Frontend Software Development with Angular - Technical consulting and analysis of existing systems and future requirements - Independent development, planning and implementation of IT concepts and solutions - Industries: IoT, Digital Tranformation

Consultant

Exxeta

2019-8 - 2023-12 · 4 yrs 5 mos

Karlsruhe, Baden-Württemberg, Germany

- Developed a vulnerability monitoring tool for over 60 services and applications, which served as the foundation for ISO 27001 certification - Reduced API response times by 75%—optimizing API calls, database queries, and large dataset processing (MongoDB and SQL)—bringing response times from over 40 seconds to under 10 seconds - Cut Keycloak session load by 98% by optimizing performance and utilization of technical users and API keys: reduced multiple 10.000 of 10-hour sessions to a few hundred and lowered average system load from over 80% to under 15% - Responsible for 6 critical applications as a service owner, including dependency updates, bug fixes, and code reviews to ensure high quality and secure code - Implemented multiple services that aggregate and cleanse 4.6 million records daily for use in statistics, charts, and reports - Created a fully automated registration process that reduced the support team’s manual customer onboarding from several days to just a few minutes, cutting lead time by over 99% and significantly easing support workload - Optimized performance by moving computational logic from the backend into the database. Previously, large time-range queries were impossible; afterward, response times dropped to just a few seconds - Designed, led, and executed a comprehensive refactoring of a critical Angular application, reducing bugs, improving code maintainability, and decoupling tightly integrated components - Invented and contributed to the testing infrastructure with automated unit and e2e tests - Technical consulting and analysis of existing systems and future requirements - Independent development, planning and implementation of IT concepts and solutions - Industries: IoT, Digital Transformation, Financial Services, Energy

Bachelor

Exxeta

2019-4 - 2019-7 · 4 mos

Karlsruhe, Baden-Württemberg, Germany

Evaluating the advantages and disadvantages of GraphQL and REST in a company context involves analyzing factors such as performance, flexibility, scalability, development complexity, and the ability to meet evolving business needs. Additionally, considerations like team expertise, existing infrastructure, and long-term maintenance play a critical role in determining the most suitable API approach.

Working Student

Exxeta

2018-3 - 2019-3 · 1 yr 1 mo

Karlsruhe, Baden-Württemberg, Germany

- Invented and contributed to the testing infrastructure with automated unit and e2e tests. - Independent development and implementation of IT concepts and solutions - Industry: Financial Services