# Senior Software Engineer, Applied AI

**Company:** [Justworks](https://hotfix.jobs/companies/justworks)
**Location:** Remote
**Role:** Backend Engineering
**Salary:** €143k – €184k/yr
**Experience:** 5+ years
**Skills:** Go, Ruby on Rails, JavaScript, Java, C#, Python, Vue, MySQL, Kafka, AWS, Redis, Elasticsearch, Docker, Terraform, Kubernetes
**Posted:** 2026-08-05

> Build and operate backend systems for an AI agent platform, including orchestration, integrations, knowledge infrastructure, trust and safety, and evaluation tooling. The role requires 5+ years of backend experience, strong API and systems integration skills, and practical experience with LLMs or AI agents.

## Job Description

## Responsibilities
- Design, build, and own core components of the agent platform, including orchestration and tool integrations.
- Build and evolve the capabilities layer, including APIs, data access patterns, and service integrations for agents.
- Architect knowledge and memory infrastructure so agents can retrieve data and act across systems.
- Design and implement trust and safety frameworks, including audit trails, human-in-the-loop controls, and guardrails.
- Contribute to agent evaluation and testing infrastructure for measuring accuracy, reliability, and regressions.
- Partner with Operations to understand workflows, identify automation opportunities, and translate process knowledge into agent capabilities.
- Mentor engineers as the team grows.

## Requirements
- 5+ years of backend engineering experience building and operating production systems.
- Hands-on experience with LLMs and AI agents, including orchestration, RAG, or tool/function calling.
- Strong API design and system integration skills.
- Product-minded approach with the ability to contribute to product decisions.
- Proven ownership of complex projects in ambiguous, early-stage environments.
- Strong backend engineering fundamentals and the ability to design, build, and operate production systems.
- Curiosity and motivation to build practical products using AI and LLMs.

## Technologies
- Golang
- Ruby on Rails
- JavaScript
- Java
- C#
- Python
- Vue.js
- MySQL
- Kafka
- AWS
- Git
- Memcache
- Redis
- Elasticsearch
- Docker
- Terraform
- Kubernetes
- CircleCI
- Datadog

## Compensation
- Base wage range: **€143,000–€184,000 per year** for positions based in the Netherlands.

## Similar jobs

- [Sr Backend Software Engineer, Recording](https://hotfix.jobs/jobs/02b0af1b-627d-41f9-81cd-5ee4f4d0cf86) - Scribe - Remote - $145k – $230k/yr
- [Senior Software Engineer - Metadata](https://hotfix.jobs/jobs/a5a8abf0-33ea-45da-92a9-aabdb54010f2) - Fivetran - Oakland, CA - $140k – $168k/yr
- [Senior Software Engineer - Backend](https://hotfix.jobs/jobs/37d58fe2-2b31-4665-9326-a41804ac7f0b) - Databricks - Vancouver, Canada - CA$146k – CA$201k/yr
- [Senior Software Engineer , Security Platform: Authorization](https://hotfix.jobs/jobs/e65930c0-38a6-4b63-b38e-79a08eebb889) - GitLab - Remote - $139k – $235k/yr
- [Senior Software Engineer , SSCS: Authentication](https://hotfix.jobs/jobs/150d2e1e-20fc-48f5-911c-0983fb04844f) - GitLab - Remote - $139k – $235k/yr

**Apply:** https://hotfix.jobs/jobs/b2a8476f-ccf3-450d-94b9-224fadc836b7
**Canonical:** https://hotfix.jobs/jobs/b2a8476f-ccf3-450d-94b9-224fadc836b7