Senior Backend Engineer at Circonomit

Cologne, North Rhine-Westphalia, Germany -

Full Time

Start Date

Immediate

Expiry Date

02 Jun, 26

Salary

0.0

Posted On

04 Mar, 26

Experience

5 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

TypeScript, Solid.js, SQL, Tantstack Start, Data Structures, Algorithms, Cloud-based Architecture, AI Capabilities, LLMs, Prompt Engineering, RAG

Industry

Software Development

Description

At Circonomit, we follow the mission to build the strategic twin of organizations. By transforming operational data into clear impact models, we revolutionize how resources are managed and decisions are made. As a Software Engineer, you will work side-by-side with our CTO to architect and ship intuitive, high-performance applications. As one of our first engineers, you will take full-stack responsibility and play a pivotal role in actively shaping our product and technical direction. Join our nerdy, fast-paced team to build the computational core that makes our mission possible. We are looking for an engineer with a bias for action who can balance speed with the mid-term tech strategy and is able to take on complex challenges with independence and curiosity. Build the backbone of Circonomit's technology and develop end-to-end features that deliver immediate value for our customers to map their reality into a semantic and computable model Build and refine high-quality, performant user interfaces with TypeScript and Solid.js Design and implement scalable backend systems with a focus on performance and maintainability Write and review clean, effective code, following best practices and design patterns Prototype fast and smart, testing and learning between AI capabilities and UX requirements 5+ years of software engineering experience, preferably in a startup or fast-paced environment GitHub or a portfolio showcasing your capabilities and expertise Proficiency in TypeScript, SQL, and modern frameworks (Solid.js, Tantstack Start, or similar) Familiar with data structures, algorithms, and cloud-based architecture Experience with AI capabilities, LLMs, prompt engineering, and RAG is a plus English and German proficiency at the C1 level or higher Already living in or willing to relocate to Cologne, Germany We are an early-stage organisation that values speed of development without cutting corners on product quality You join as part of the core team to shape the technical foundation and story of our company We empower you with ownership and decision-making authority to build, test, and lead starting day one We ensure you have skin in the game by offering both a competitive salary and equity We fully cover your Urban Sports Club membership because we believe that high performance relies on active recovery You have the space to learn and progress quickly, encouraged by the contagious curiosity and ambition of our team Can't wait to chat! “Hustle the day, analyse at night, reinforce something outstanding.” Period. Erik & Dana

Responsibilities

The engineer will architect and ship high-performance applications, taking full-stack responsibility to build the computational core of the company's mission. Responsibilities include developing end-to-end features, refining user interfaces, and designing scalable backend systems focusing on performance and maintainability.