Tadej Slamic
Verified Expert in Engineering
Software Developer
Oslo, Norway
Toptal member since July 10, 2019
With over a decade of experience in the software industry, Tadej boasts an exceptional track record. His versatile expertise ranges from assisting startups to guiding FTSE 100 companies through digital transformations, fueling the fintech revolution, optimizing particle accelerators, and more. Specializing in developing modern, scalable, high-performance solutions, Tadej also excels in team leadership, strategic business planning, and effective communication.
Portfolio
Experience
- Java - 11 years
- Python - 10 years
- JavaScript - 8 years
- Android - 8 years
- Go - 7 years
- iOS - 6 years
- Kotlin - 5 years
- Swift - 3 years
Availability
Preferred Environment
Go, Java, Kotlin, Python, JavaScript, TypeScript
The most amazing...
...project I've worked on went from zero to millions of users in less than a year and won an internationally acclaimed award for the best product in its genre.
Work Experience
Principal Consultant
Enfunc
- Assisted a fintech startup in delivering a Minimum Viable Product (MVP), which led to a successful Series A funding round and earned the Non-Bank Lender of the Year award.
- Collaborated with a multinational pharmaceutical and biotechnology corporation on software that streamlined the delivery of the COVID-19 vaccine.
- Served as the chief technology officer (CTO) for a well-funded crypto startup valued at a $7 million market cap with over 50,000 transactions.
- Contributed to one of the most prominent and rapidly growing fintech startups in the United States.
- As a senior leadership team member, I managed a unit responsible for one of the market's most established AdTech creative automation products.
- Authored a series of articles focused on best practices in authentication and authorization for the world's leading identity platform.
Chief Technology Officer
Shortcut
- Oversaw engineering efforts and delivery, aligning the tech strategy with company OKRs. Ensured the implementation of modern practices, processes, and tools and guided leaders in international offices in adopting a similar operational approach.
- Contributed to acquisitions, performed technical due diligence, and supported sales initiatives, leading to increased monthly revenue and higher hourly rates across the engineering team.
- Managed technical recruitment, conducting numerous technical interviews since joining the organization.
Technical Lead
Shortcut
- Designed and developed an Identity Provider (IDP) for a multinational retail giant, substantially reducing running costs and eliminating all legacy issues. Improved user experience latency, crash reporting, and performance metrics.
- Led the development of a mobile solution for Scandinavia's largest haircut provider, consolidating multiple services onto a single, scalable platform with a seamless API. This facilitated the company's effortless expansion across Europe.
- Held responsibility for the technical output of teams developing some of Scandinavia's most popular applications.
Engineering Lead
Lloyds Banking Group
- Led a team of 10+ people responsible for the platinum journeys around payments and statements on the #1 UK banking app three years in a row.
- Governed the adaption of a recent mobile acquisition onto our tech stack.
- Engaged in technical debt burning, architecture, refactoring, and performance tuning of an app used by millions.
- Performed code reviews across the whole mobile floor.
Senior Software Consultant
BJSS
- Served as the technical architect for a major healthcare client, investigating the feasibility of transitioning their web-based product to mobile platforms. Following my comprehensive report, the client successfully implemented the proposed solution.
- Served as the Android lead for the UK's largest postal service, spearheading the development of an app that offered insights into employee operations, work environment, and behavioral patterns. This enhanced the accuracy of delivery predictions.
- Conducted a thorough review of the largest UK-owned airport operator's Android app, successfully resolving numerous memory and performance issues and fixing various bugs.
Senior Software Engineer
Full Tilt Poker / PokerStars
- Spearheaded the entire development lifecycle of the Full Tilt Poker Android app, achieving over one million downloads across multiple distribution platforms in less than a year.
- Optimized various components of the app, achieving speed improvements by factors of two to 20. Introduced form-factor independent UI elements, resulting in a notable uptick in tablet usage.
- Achieved the IGA gaming app award for the Best Poker App of 2014.
Experience
Open Source Projects
https://tslamic.github.io/projects/Lloyds Bank Mobile Banking
https://www.lloydsbank.com/online-banking/mobile-banking.htmlTechnical Writing
https://auth0.com/blog/authors/tadej-slamic/Education
Completed Credits towards a Bachelor's Degree in Mathematics and Computer Science
University of Ljubljana - Ljubljana, Slovenia
Skills
Libraries/APIs
Experian, Yodlee API Interface, REST APIs, Node.js, API Development, Slack API, Stripe, RxJava 2, OpenID, MooTools, SWT, jQuery, React, Eclipse SWT, Stripe API, Facebook API, GitHub API, X (formerly Twitter) API, Google Places API, Google Play API, Web3.js, Vue
Tools
Firebase Cloud Messaging (FCM), Git, Make (formely Integromat), IntelliJ IDEA, GitHub, Auth0, Google Analytics, Gradle, Apache Maven, Fastlane, Terraform, Android Studio, Xcode, Gerrit, JetBrains, Shell, Jenkins, Sonar, Eclipse RCP, Cucumber, Jira, Visual Studio App Center, Amazon Cognito, Plaid
Languages
Java, Go, Kotlin, Python, TypeScript, JavaScript, C#, HTML5, SQL, Swift, Objective-C, HTML, CSS, XML, YAML, Solidity, Ruby, Embedded C, C, C++, PHP, Bash, GraphQL, Scala
Frameworks
Spring Boot, Spring, OAuth 2, JSON Web Tokens (JWT), Flask, Flutter, Express.js, gRPC, Swagger, .NET, Ruby on Rails (RoR), Angular, Bootstrap, Kohana, PhoneGap, Django, Swing, React Native, Storm, Hadoop, Spark
Paradigms
Automation, App Development, RESTful Development, REST, Clean Architecture, Scalable Application, Dependency Injection, Agile, Functional Programming, Microservices, Reactive Programming, Continuous Delivery (CD), Continuous Integration (CI), Event-driven Architecture, Test-driven Development (TDD), Unit Testing, Web Architecture, Web Application Architecture, Serverless Architecture, Continuous Deployment, Behavior-driven Development (BDD), Cross-platform, Testing, MapReduce, DevOps
Platforms
AWS Lambda, Mobile, Android, Firebase, Google Cloud Platform (GCP), Twilio, iOS, Xamarin, Docker, Amazon Web Services (AWS), Ethereum, Azure, Kubernetes, Eclipse, Apache Kafka, Unix, Blockchain, Heroku, Web
Storage
JSON, PostgreSQL, Memcached, Databases, NoSQL, Redis, Realm, MySQL, Cloud Firestore, Google Cloud, Elasticsearch, PL/SQL, MongoDB
Industry Expertise
Banking & Finance
Other
Software Development, Blockchain Development, Back-end, APIs, Authentication, Technology, Technical Leadership, SOAP, Minimum Viable Product (MVP), Mobile Architecture, Middleware, Software as a Service (SaaS), CTO, Fintech, Mobile Apps, Mobile APIs, Containerization, Containers, Software Architecture, Writing & Editing, Stripe Payments, Planning, Back-end Development, Firebase Cloud Functions, Data Scraping, Payment APIs, SOLID Principles, Open Source, Communication, Leadership, Architecture, Web Scraping, Mentorship & Coaching, Native Mobile Apps, Web Development, Full-stack, Team Management, Distributed Team Management, Technical Hiring, Interviews, Interviewing, Code Review, Source Code Review, Push Notifications, Scripting, SaaS, API Integration, Integration Testing, System Integration Testing (SIT), OAuth, CI/CD Pipelines, System Architecture, Progressive Web Applications (PWAs), Cloud Services, Consul, Financial Services, WebSockets, FindBugs, Google Cloud Functions, Cloud, Serverless, Protocol Buffers, Algorithms, Data Structures, Analytics, User Experience (UX), Concurrency, Trading, Mathematics, Software, Cordova, Kotlin/Native, Mobile Banking, Machine Learning, Big Data, Offshore Team Management, Online Banking, Team Leadership, Google, Presentations, Tech Sales, Public Speaking, Technical Writing, Fiserv, Optimization, Advertising Technology (Adtech)
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