Senior Backend Engineer (Golang) - Munich

About the role

**About CONXAI**

CONXAI has built a **no\-code, agentic AI platform** for the Architecture, Engineering and Construction (AEC) and physical industries, focused on **knowledge\-automation**. We automate high\-stakes, knowledge\-intensive workflows traditionally trapped in siloed data, fragmented tools and tacit (undocumented) human expertise.

Our **multi\-agent systems** perform complex reasoning in the physical world; and transform bespoke, service\-heavy processes into scalable **Service\-as\-a\-Software** automation.

CONXAI is trusted by some of the leading AEC companies in Europe, US, LATAM and Japan.

**Your Role**

As a **Senior Backend Engineer**, you will play a key role in designing and evolving the backend architecture that powers a complex B2B AI platform. Our backend services process large volumes of structured and unstructured data, orchestrate AI workflows, and expose reliable APIs for both internal services and customer\-facing applications.

You will focus on buildin**g high\-performance distributed systems** that are reliable, scalable, and designed for long\-term evolution.

This role is ideal for someone who:

* Takes ownership of backend architecture and system reliability * Thinks in terms of **distributed systems, concurrency, and scalability** * Designs clean service boundaries and well\-structured APIs * Values maintainable, production\-grade code * Enjoys collaborating with frontend, ML and platform teams

**Our Tech Stack**

* **Golang** (primary backend language for core services) * **Python**, **TypeScript / NestJS** (supporting services) * **PostgreSQL**, **MongoDB (AWS DocumentDB)** * REST APIs * Docker \& Kubernetes (EKS) * AWS Cloud (S3, Cognito, compute services) * CI/CD pipelines and automated deployments

**What You’ll Do**

**Architect \& Build Scalable Backend Systems**

* Design and develop backend services primarily using **Golang** * Build scalable APIs and backend services that power **AI\-driven workflows** * Design systems capable of processing **large\-scale datasets across multiple tenants** * Develop **high\-performance services** leveraging Go’s concurrency model * Define clear service boundaries and maintain robust API contracts * Contribute to architectural decisions for distributed backend systems

**Deliver High\-Quality Backend Code**

* Write production\-grade backend services in **Go** * Design and implement **RESTful APIs** for internal and external integrations * Ensure reliability through **testing, monitoring, and observability** * Optimize system performance, latency, and resource usage * Debug and resolve complex production issues

**Work with Cloud Infrastructure**

* Develop and deploy services using AWS cloud infrastructure * Work with Docker and Kubernetes (EKS) to run and manage distributed services * Utilize AWS services for storage, authentication, and compute workloads * Collaborate with DevOps and platform teams to maintain reliable CI/CD pipelines

**Collaborate Across Teams**

* Work closely with **frontend engineers, ML engineers, and product teams** * Support integration of **AI capabilities** into backend systems * Participate in architecture discussions and technical planning * Conduct thoughtful code reviews and mentor junior engineers

**What We’re Looking For**

**Must Haves**

* **5\+ years** of professional backend development experience * Strong experience with **Golang** * Experience in designing **scalable backend systems and APIs** * Strong understanding of **distributed systems and microservice architecture** * Experience in working with **AWS cloud infrastructure** * Experience in working with **relational databases and SQL** * Strong debugging, system design, and problem\-solving skills * Strong written and verbal **English communication skills**

**Highly Valued**

* Experience in building complex **B2B SaaS platforms** * Experience with **Kubernetes and container orchestration** * Experience in designing systems for **large\-scale data processing** * Experience working on **AI or data\-intensive platforms**

**Nice to Have**

* Experience with **Python or TypeScript (NestJS)** * Experience with **event\-driven architectures** * Experience integrating **AI/ML services into backend systems** * Experience in **AEC, construction, or infrastructure domains**

**Why CONXAI**

* **Edge of Innovation:**Be at the absolute forefront of AI in the construction tech space * **High Impact:**Build core infrastructure powering real\-world AI automation used by global companies * **Top\-Tier Peer Group:**Work with a global team of ML engineers, software engineers and industry practitioners * **Growth Opportunities:**Join a fast\-growing company where engineering decisions directly shape the future of the platform