Hi,

My name is Konstantin Lindner

Full-stack Software Engineer on Opera's Web Core team, building scalable web solutions that power MiniPay and Aria, Opera's AI. Designing and developing modern web applications and APIs with TypeScript, React, Astro, Next.js, PostgreSQL and tRPC—with an emphasis on maintainability, performance, and developer experience.

Recent work includes building a new CMS platform from the ground up, with a custom backend, admin interface, and APIs that integrate with MiniPay's native app.

QA Engineer on Opera's Web Core team, focusing on quality and reliability while contributing to development. Primary work centered on Aria, Opera's AI—involved in both testing and development, helping shape features, improve stability, and drive continuous improvement.

Responsibilities included code reviews, PR testing, monitoring Sentry-reported issues, and tackling coding tasks related to quality processes and developer experience.

Co-founded Pelatech, an online retail company. Leading technical strategy and product development.

Worked on fit52, a fitness app from Carrie Underwood. Contributing to both the React Native frontend and PHP Laravel backend. Frontend technologies used include React Native, Expo, MobX, Firebase, Leanplum/Clevertap and RevenueCat.

Tasked to improve the content management tool for Hanx101 Trivia, rewriting the frontend from scratch using React and improving the backend already in place.

Did R&D into AI and built tools such as an e-commerce chatbot and a browser extension for shopping. Stack for both consisted of React, Firebase, GPT-4 and Pinecone. I also wrote advanced data collection scripts using Puppeteer for these products.

At m56 Studios, I contributed as a QA engineer to projects like fit52, a fitness app, the content management tool for Hanx101 Trivia, by Tom Hanks - an Apple Arcade exclusive trivia game, as well as AI tools for other projects built on GPT-4 and vector databases such as Pinecone.

When working on fit52, I was responsible for reviewing and approving code changes for both front- and backend portions of the mobile application, through code review as well as utilizing manual and automated testing. Automated testing includes writing automated tests in tools like Detox and Maestro for testing on iOS and Android.

Other responsibilities include bug and ticket triage, content changes, developing the QA process and testing schedules as well as process documentation.

Built internal tools and digital dashboards for a major Swedish construction group. Projects included a data scraping tool and an advanced email signature generator for a group of companies.

Designed and implemented a new landing page with NextJS, replacing the current Wordpress site for a SaaS company in the real estate industry. I used Figma to create mocks and built the website with React, NextJS 14 and Resend.

As Logistics Coordinator, I played a vital role in overseeing deliveries from manufacturers and distributors to our warehouse. I efficiently managed internal shipments and resolved any issues that arose with shipping agents.

An exciting aspect of my role was collaborating closely with the in-house development team to enhance our internal programs and tools. This collaboration allowed us to optimize and streamline logistics processes, improving overall efficiency and effectiveness.

As a Technical Advisor, I provided expert technical assistance to customers, offering pre-sale advice, troubleshooting support, and after-sale help.

My dedication to providing excellent customer service was recognized when I was awarded the honorable Suverän Service commendation. This recognition came from a mystery shopper hired by Better Business Worldwide, and it highlighted my commitment to ensuring a positive and memorable customer experience.

During my time at Hermods, one of Sweden's oldest educational institutions, I had the opportunity to delve into the fascinating world of biology.

The program provided a comprehensive and hands-on approach to understanding the complexities of life and the natural world. From the cellular level to ecological systems, the coursework covered a wide range of topics, equipping me with a solid foundation in biological principles.

This course covered JavaScript fundamentals to advanced concepts like React and Node.js. Hands-on projects and a supportive team environment at m56 Studios accelerated my growth as a developer. This course was a pivotal step in my professional journey, empowering me with valuable skills for web development and sparking a passion for continuous learning in the tech industry.

Enrolled in the prestigious Economics and Law program at Donnergymnasiet, a top school in Gothenburg, from 2015 to 2018. Actively participated in various school clubs and organizations. Graduated in June 2018, this program provided an excellent educational foundation in the fields of economics and law, preparing me for future academic pursuits and professional endeavors.

I received the rare and prestigious "Suverän Service" commendation from Better Business World Wide, as a mystery shopper recognized my customer service skills.

The motivation behind the commendation read: "Konstantin displayed remarkable kindness, trustworthiness, and attentiveness to my needs as a customer. His dedication in resolving my issue went above and beyond, making our interaction feel like a conversation with a friend. I was so impressed that I would have happily made a purchase solely based on the positive experience of speaking with this outstanding employee."

In June 2023, I took the IELTS English and achieved an overall band score of 8.5 out of 9. This accomplishment reflects my strong English language proficiency in Listening, Reading, Writing, and Speaking. I am proud of this achievement as it opens up opportunities for academic and professional growth in diverse international settings.