Senior Backend Engineer (Golang)

About CONXAI

CONXAI has built an 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

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

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