Senior Backend Engineer (Golang)

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 building 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