Tumi Snær Gíslason
Verified Expert in Engineering
Software Developer
Reykjavík, Iceland
Toptal member since September 23, 2022
Tumi is a senior software engineer with eight years of professional experience. He has a positive attitude toward work-related challenges and believes teamwork and empathy with both co-workers and customers are crucial to accomplish outstanding results. Experienced in a wide array of technologies, Tumi is a quick learner of new tools, technologies, and programming languages and is willing to leverage his expertise in new challenging projects.
Portfolio
Experience
- Python 3 - 7 years
- PostgreSQL - 6 years
- REST - 6 years
- Distributed Systems - 6 years
- GraphQL - 5 years
- Amazon Web Services (AWS) - 5 years
- Scala - 5 years
- Streaming Data - 5 years
Availability
Preferred Environment
Amazon Web Services (AWS), Python 3, Scala, Java, Node.js, PostgreSQL, Terraform, Kubernetes, Distributed Systems, Streaming Data
The most amazing...
...solution I've developed is the back-end system for a dating app ranked number one in its category in my geographical area.
Work Experience
Senior Software Engineer
Smitten
- Developed features, fixed bugs, architected cloud infrastructure, optimized data storing and fetching, maintained deployment pipelines, managed monitoring solutions, and improved business-critical algorithms.
- Joined the project after the seed funding and helped the product grow to the point that enabled the company to start receiving Series A funding.
- Optimized the matching algorithm to run in less than 100 milliseconds for each user with fewer computational resources. It increased the solution scalability and aided in the organic growth of our user base.
- Took part in a 24/7 on-call rotation of engineers, responding to and managing critical incidents, and writing up post-mortems.
- Set up logging and metric pipelines to monitor and alert on anomalies using Datadog and PagerDuty.
Software Engineer
Gangverk
- Developed core services in a microservice architecture for a highly critical, money intense auction platform for one of the most significant and oldest auction houses selling art and various luxury items.
- Created a back-end solution that sold the most expensive item bought with a button click in an online-only auction.
- Took part in a 24/7 on-call rotation of engineers, responding to and managing critical incidents, and writing up post-mortems.
- Developed the first NFT auction for our client, a massive success in early 2021.
Software Engineer
Rapyd Financial Network (2016) Ltd.
- Took part in the core back-end team developing custom in-house solutions.
- Developed Java processes that were the backbone of all post-processing for ingested credit and debit card transactions, chargebacks, settlements, and more.
- Helped the business set up monitoring, triggers, and data pipelines by custom business rules and notifying when detecting anomalies.
Software Engineer
Prógramm
- Acted as a contractor handling full-stack development for several large government agencies in Iceland.
- Created web APIs, message brokers, database schemas, and web interfaces for various clients.
- Collaborated with other team members and orchestrated everything from database queries to web interfaces.
Experience
Back end for a Large Auction House
Back-end System for a Global Dating Application
Education
Bachelor's Degree in Computer Science
University of Iceland - Reykjavík, Iceland
Skills
Libraries/APIs
Node.js
Tools
Terraform
Languages
Python 3, Scala, Java, TypeScript, GraphQL, Go
Paradigms
REST
Platforms
Amazon Web Services (AWS), Docker, Kubernetes, PagerDuty
Storage
PostgreSQL, Datadog, Redis, Cloud Firestore, Oracle PL/SQL
Frameworks
gRPC
Other
Distributed Systems, Streaming Data
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