Nils S.-Backend System and Web Client for Replacing Electricity Meters for Energy Suppliers
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Experience
Backend System and Web Client for Replacing Electricity Meters for Energy Suppliers
Freelance
Design and implementation of a system for controlling the complete process of installing, removing, and replacing electricity meters by external service providers for an energy supplier
Automated retrieval of orders and available devices through defined interfaces (e.g. from SAP)
Orchestration of the process steps (assignment of meters, processing of meter data, transfer of updated information back to the source system) through a Spring-Boot backend
Provision of a React-based web client for operational tracking and control of orders, e.g. to continue failed process steps or resend notifications
Backend System for a Platform for the Solidarity-Based Financing of School Trips
Freelance
Development of a platform for transparent and socially graduated contribution management for school trips
Teachers inform parents about planned trips, including cost details, and invite them to submit a contribution
Families determine their share based on their individual means; higher contributions from financially stronger participants offset lower contributions from others
Multi-round contribution assessment process until the total costs are covered, with automated notification of parents about the final amount to be transferred
Implementation of the backend in Golang with API-Key and JSON-Web-Token authentication and PostgreSQL persistence
Local Backend System for a Boat Overview
Freelance
Design and implementation of a Golang-based backend for providing system data from an Ubuntu-based onboard computer
Forwarding of multiple camera streams for a boat's all-around view
Migration and optimization of an existing Python project in terms of performance and architecture
Aggregation of local operating system information and preparation and forwarding of streaming data to connected clients
Backend System for a Social Media Platform
Freelance
Development of a platform for connecting people with similar interests based on profile information and individual preferences
Publishing and filtering of content by preferred categories with prioritized display
Integrated messaging system for direct communication
Implementation of the backend in Golang with API-Key and JSON-Web-Token authentication
Persistence in a relational PostgreSQL database; storage of uploaded files in the Azure Cloud and provision through the API
Backend System for an Institute for Testing Biological Samples
Freelance
Design and development of a system for providing, uniquely labeling, and managing biological sample collection kits by group, with subsequent evaluation capabilities
Mapping of the complete process chain, from creating individual kits and assigning them to definable groups through to analysis
Implementation of the backend in Golang with API-Key and JSON-Web-Token authentication
Persistent storage in PostgreSQL; storage of uploaded files on the file system and provision through the API
Backend System for Documenting Tradespeople's Work Orders
Freelance
Creation of a new backend in Golang for documenting work orders of a trades business
Use of API keys and JSON Web Tokens for authentication
Storage of data in an SQL database; storage of files generated by the backend in the file system with access via the API
Backend System for Processing Signage Technology Orders
Freelance
Development of a backend in Golang for the structured documentation and processing of orders in a trades business
Mapping of the complete documentation process and provision of all information via an API
Authentication using an API key and JSON Web Token
Persistent storage in PostgreSQL; storage of documents and files in the file system with provision via the API
Backend System Including App Communication for Bereaved Persons
Freelance
Design and implementation of a scalable backend API in Node.js for communication with bereaved persons
Securing the API using an API key and JSON Web Token
Persistence in MongoDB
Containerized deployment in AWS using the AWS CDK for easy customization and redeployment
Front and Backend for Access and Authorization Management of Parking Facilities
Freelance
Migration of an existing Lumen API to Laravel for managing access and authorization processes for parking facilities
Carrying out maintenance measures and fixing existing bugs
Data persistence in MySQL
Revision and optimization of the PHP-based web frontend, with HTML styles moved to central CSS files
Implementation of new modules, views, and backend functions
Various Websites for Municipal Institutions Including App Communication
Freelance
Setup, ongoing maintenance, and customization of several WordPress instances
Development of custom WordPress plugins in PHP with a flexible configuration structure based on JSON
Application for Generating and Verifying JWTs with Various Encryption Methods
Freelance
Design and implementation of a command-line tool for creating and validating JSON Web Tokens using different encryption methods
Interactive input and parameter processing, with the generated or verified tokens displayed directly in the command line
Management System for Electronic Locking Systems Including App Communication
Freelance
Development of a cloud-based backend API in Golang for managing electronic locking systems
Design, implementation and optimization of functions for smooth data flow between frontend, backend and database
Authentication and authorization using API key and JSON Web Token
Persistent storage in PostgreSQL
Standardized API documentation in JSON/YAML according to the OpenAPI specification
Development and Maintenance of Internal Production and Service Tools
Freelance
Maintenance, further development and new development of production and service tools in Delphi with Firebird-SQL databases
Analysis and resolution of reported errors, as well as extension of existing functions and implementation of smaller new features
Design of user interfaces with DevExpress
Design, planning and implementation of new applications, including new forms and modules, in close cooperation with production and service
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Manufacturing, Utilities, Automotive, Education, and Biotechnology.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Information Technology, Product Development, and Operations.
Summary
With nine years of experience as a software developer and freelancer, I bring a broad range of knowledge across various technologies from many different projects, specializing in backend development. Through my long-term work as a service employee, I am very outgoing, customer-focused, and can quickly put myself in other people's position and way of thinking. Combined with my eagerness to learn and curiosity about new environments and technologies, these qualities make me universally suited both for large projects where I become part of the team and work together over the long term, as well as for small projects that offer short and interesting insights.
Skills
- Architecture Technical Concepts, Software Architecture
- Google Golang
- Php Laravel, Lumen
- Java Spring Boot, Lombok
- Embarcadero Delphi (Including Firedac And Devexpress Components)
- Web Angular, Typescript, Javascript, Node.Js
- Databases Mysql, Postgres, Firebird, Mariadb, Mongodb
- Cloud Aws, Aws Cdk, Azure
- Container Docker
- Integration Confluence, Jira, Git, Svn, Gitlab, Github, Jenkins, Kubernetes, Ci/Cd
Languages
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Experience
Expertise
Profile
Frequently asked questions
Have questions? Find more information here.
Nils is based in Heiligenhaus, Germany and can operate in on-site, hybrid, and remote work models.
Nils speaks the following languages: German (Native), English (Advanced).
Nils has at least 10 years of experience. During this time, Nils has worked in at least 13 different roles and for 1 company. The average length of individual experience is 1 year and 9 months. Note that Nils may not have shared all experience and actually has more experience.
Based on recent experience, Nils would be well-suited for roles such as: Backend System and Web Client for Replacing Electricity Meters for Energy Suppliers, Backend System for a Platform for the Solidarity-Based Financing of School Trips, Local Backend System for a Boat Overview.
Nils's most recent position is Backend System and Web Client for Replacing Electricity Meters for Energy Suppliers at Freelance.
In recent years, Nils has worked for Freelance.
Nils is most experienced in industries like Information Technology, Manufacturing, and Utilities. Nils also has some experience in Automotive, Government and Administration, and Education.
Nils is most experienced in business areas like Information Technology, Product Development, and Operations.
Nils has recently worked in industries like Information Technology, Manufacturing, and Utilities.
Nils has recently worked in business areas like Information Technology, Product Development, and Operations.
The availability of Nils needs to be confirmed.
Daily rate distribution
The rates shown represent the typical market range for freelancers in this position based on recent contracts on our platform.
Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 3 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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