Claus Ruete, Developer in Las Vegas, NV, United States
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Claus Ruete

Verified Expert  in Engineering

Bio

Claus is a highly skilled and experienced software engineer dedicated to writing clean code at every layer of the hierarchy. He prefers to use modern functional programming patterns in his projects, focusing on code reusability and maintainability. His expertise spans various technologies, including JavaScript, Node.js, PostgreSQL, and AWS. Claus excels in building and deploying back-end services, integrating machine learning (ML) models, and scaling applications.

Portfolio

Scoop Technologies, Inc.
JavaScript, REST APIs, Node.js, PostgreSQL, Amazon Web Services (AWS)...
Human
Swift, iOS
Matco Enterprises
Amazon Web Services (AWS), TypeScript, Node.js, Web Development, CSS, HTML

Experience

  • APIs - 8 years
  • JavaScript - 8 years
  • Node.js - 8 years
  • REST APIs - 8 years
  • Functional Programming - 8 years
  • WebSockets - 5 years
  • PostgreSQL - 5 years
  • Microservices - 3 years

Availability

Part-time

Preferred Environment

Git, MacOS, Visual Studio Code (VS Code)

The most amazing...

...challenge in software engineering is scaling applications from just a few to thousands or millions of clients—just like I did at Hapag-Lloyd.

Work Experience

Senior Back-end Engineer

2022 - 2024
Scoop Technologies, Inc.
  • Built and deployed backend services to support web frontends, mobile apps, and a Slack app.
  • Developed ETF/analytics data flows to support executive decision-making.
  • Integrated existing large language models and trained smaller machine learning (ML) models to build additional user-facing features.
Technologies: JavaScript, REST APIs, Node.js, PostgreSQL, Amazon Web Services (AWS), TypeScript, NestJS, Google Calendar API, Chrome Extensions, Slack API, Slack App, Microservices, Kubernetes, Terraform, Large Language Models (LLMs), PyTorch, Python

Senior iOS Engineer

2021 - 2021
Human
  • Built a social media app with video recording, sharing, and public feeds.
  • Implemented high-quality designs to optimize onboarding and UI and UX in general.
  • Conducted technical interviews to ensure the acquisition of additional high-quality engineering talent.
Technologies: Swift, iOS

Back-end Developer

2020 - 2021
Matco Enterprises
  • Developed a brand new application for large-scale data transfer in the medical field, using Node.js and TypeScript.
  • Held responsibility for choosing the tech stack, overseeing the whole development lifecycle from the initial lines of code to deployment to AWS.
  • Ensured safe and secure handling and transfer of patient data.
Technologies: Amazon Web Services (AWS), TypeScript, Node.js, Web Development, CSS, HTML

Back-end Developer

2020 - 2020
Hapag-Lloyd
  • Developed a Node.js back end for a logistics business in international goods shipping.
  • Upgraded an existing JavaScript codebase to TypeScript.
  • Upgraded a Node.js back end from a single instance to auto-scaling with multiple instances.
  • Set up a new PostgreSQL database with indices, stored procedures, and partitioning.
  • Performed maintenance work on a cluster of microservices for goods fulfillment.
  • Set up new APIs using REST principles and other services to use these APIs.
Technologies: Microservices, Full-stack, Node.js, TypeScript, JavaScript, REST, REST APIs, Architecture, Software Development, Leadership, Functional Programming, WebSockets

iOS Developer

2019 - 2020
OkCupid
  • Collaborated with a team of developers to improve and build new features for a dating application.
  • Refreshed the user interface and marketing of in-app purchases.
  • Incorporated analytics and A/B testing to continuously improve the user experience.
Technologies: iOS, Objective-C, Swift

iOS Developer

2018 - 2020
Nuro
  • Developed a brand-new iOS application for the navigation of grocery delivery drivers.
  • Enabled the expansion of a diverse fleet of fully autonomous, partially autonomous, and manual vehicles.
  • Built features for tracking driver locations, notifications about assigned deliveries, routing, grocery pickup/dropoff, and more.
Technologies: iOS, Swift

Full-stack Developer

2019 - 2019
Tinble
  • Worked on an application allowing users to access local business offers and coupons.
  • Built B2B features for a business panel to access and analyze user data using a Node.js back end and Angular front end.
  • Implemented geofencing to track interactions between the end customers and local businesses.
Technologies: APIs, Node.js, JavaScript, iOS, Swift

iOS Developer

2019 - 2019
Graffunder Holdings LLC
  • Extended an iOS app used for in-flight navigation by pilots.
  • Built new UI features and refined the user interface.
  • Developed features to replay, upload, and download flight data.
Technologies: PostGIS, iOS, Swift

iOS Developer

2017 - 2017
IQZone
  • Translated Android framework functionality to iOS to enable cross-platform availability of advertising features.
  • Implemented access to an advanced proprietary advertisement filling technology from the iOS platform.
  • Added high-performance caching to improve networking performance in geographic areas with lower-speed network access.
Technologies: iOS, Objective-C

iOS Developer

2017 - 2017
SixCRM
  • Developed a brand new app for customer-relations management.
  • Built custom charts, graphs, and plots for user data.
  • Oversaw the whole progress of the app development from initial sketches to the release-ready application.
  • Interacted with a GraphQL API for all customer data.
Technologies: iOS, Swift, GraphQL

iOS Developer

2017 - 2017
Position Technologies, Inc.
  • Took over full responsibility for the iOS app for data entry and B2B data management in map data distribution for physical business locations.
  • Got the app ready for release and used by customers/business partners.
  • Enabled the extension of a successful business venture from only large B2B clients to include small businesses.
Technologies: iOS, Objective-C, Swift

Artificial Intelligence and Computer Vision Researcher

2013 - 2016
Goethe-Universität
  • Wrote algorithms for advanced image processing and feature detection.
  • Evaluated behavioral patterns and participated in risk analysis for self-driving cars.
  • Ran simulations to test various scenarios where software controls driver assistance systems or fully self-driving cars.
Technologies: PostgreSQL

iOS Developer

2012 - 2016
Freelance Work
  • Deployed self-built applications to the iOS App Store.
  • Supported users and evaluated feedback.
  • Updated and permanently improved apps over long periods of time.
  • Developed general-purpose and specific frameworks to share reusable components between apps.
  • Handled migration from Swift 1 to Swift 2 and from Swift 2 to Swift 3.
Technologies: Objective-C, Swift, Xcode

iOS Developer

2014 - 2015
Rossmann
  • Built the initial version of the iOS app from the ground up.
  • Incorporated the company's corporate design into the app.
  • Implemented simple user authorization while keeping all features usable by non-authorized users.
  • Coordinated communication between the retail, marketing, and software development teams.
  • Refactored the back end to enhance performance and improve security.
Technologies: MongoDB, Node.js, Objective-C, Xcode

Experience

Flex Index

The leading global insight platform on flexible work. I contributed to its development from the start, working on key features, including FlexGPT, which allows decision-makers to access flexible work insights on demand using natural language prompts, get custom flex policy insights, and view data visualizations.

OkCupid

http://www.okcupid.com/
A popular dating app. I contributed to developing the app, mainly focusing on refreshing the user interface and marketing of in-app purchases, adding new kinds of monetization and helping develop longer-term user retention strategies using A/B testing.

Education

2013 - 2016

Bachelor of Science in Computer Science

Goethe-Universität - Frankfurt, Germany

Skills

Libraries/APIs

REST APIs, Node.js, Google Calendar API, Slack API, PyTorch

Tools

Xcode, Terraform

Languages

TypeScript, Objective-C, HTML, CSS, Swift, JavaScript, GraphQL, Python

Paradigms

Microservices, REST, Functional Programming, Unit Testing, Continuous Integration (CI)

Platforms

Amazon Web Services (AWS), iOS, Visual Studio Code (VS Code), Kubernetes

Storage

PostgreSQL, MongoDB, MySQL, PostGIS

Frameworks

NestJS

Other

Architecture, Web Development, Leadership, APIs, Full-stack, Software Development, WebSockets, Chrome Extensions, Slack App, Large Language Models (LLMs), OpenAI, ChatGPT API

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