Join

Amaris Consulting and work on

AI‑powered payroll and human resources management platforms serving thousands of users worldwide. Be part of an international team, grow in an agile environment, and develop your career within a general group that values innovation, collaboration, and talent.

As a

Senior Full‑Stack Engineer , you will be a key member of the team building our

AI‑powered Payroll Operations platform . You will work on a cutting‑edge intelligent assistant that automates and streamlines payroll workflows, enabling practitioners to manage payroll operations efficiently through a conversational AI experience. You will contribute across the full stack — from micro frontends and web components , through

REST APIs and relational databases , to cloud‑hosted AI agents

— and integrate with multiple enterprise payroll systems.

What we’re looking for

7+ years of experience as a

Full‑Stack or Backend Engineer working with

Python and/or .NET in complex enterprise environments.

Strong experience designing and building

Python‑based services , ideally including

AI agents or integrations with cloud AI platforms.

Solid experience with

.NET Core for building

RESTful APIs and backend services.

Experience with modern frontend frameworks , ideally

Angular , and with web components

(Stencil or similar) and micro frontend architectures .

Strong knowledge of relational databases

(preferably

SQL Server ): writing complex queries, understanding schemas, and integrating with existing data models.

Experience with infrastructure as code , ideally

Terraform , and cloud deployments (Azure/AWS/GCP).

Solid understanding of software architecture and distributed systems

(modularization, scalability, resilience).





Experience integrating with or modernizing legacy enterprise systems without impacting existing functionality.

Good understanding of security best practices : identity and access management, trust boundaries, idempotency, audit trails, PII protection, feature flags/kill switches.

Hands‑on experience with

CI/CD tools

(Azure DevOps, GitLab CI, Jenkins, GitHub Actions, etc.) and use of

Git .

Strong knowledge of software engineering best practices : clean code, design patterns, testing, code review, documentation.

Professional level of English , able to collaborate with international teams – your day‑to‑day work will be in English.

What you will do

Design, build, and maintain

Python‑based AI agents using modern agentic frameworks and cloud AI runtimes.

Develop and maintain

.NET Core APIs that act as downstream services for the AI agent layer.

Build and integrate

Angular micro frontends and

Stencil web components into an existing enterprise shell application.

Work with

SQL Server databases: write and optimize queries, understand and evolve schemas, and integrate with existing payroll data models .

Write and maintain

Terraform code to define and manage cloud infrastructure for the platform.

Integrate new

AI and automation capabilities into legacy enterprise payroll systems without breaking existing functionality.

Collaborate closely with frontend, backend, AI, and infrastructure teams to deliver end‑to‑end features.





Implement and enforce security and compliance best practices across the stack (identity, auditability, PII redaction, feature flags, etc.).

Contribute to technical design documentation, READMEs, and the team knowledge base , helping to spread best practices and onboard new team members.

Strong problem‑solving skills and analytical thinking , with the ability to understand complex business and technical domains (payroll, HR, compliance).

Excellent communication skills and ability to work in multidisciplinary teams

(engineering, architecture, product, operations, business stakeholders).

Proactive attitude , strong sense of ownership , and focus on continuous improvement and automation.

Comfortable working in agile environments

(Scrum, Kanban), participating in ceremonies and contributing to team rituals.

Experience in financial services, payroll, HR tech or other highly regulated sectors .

Experience with event‑driven architectures and messaging systems

(Kafka, RabbitMQ, etc.).

Experience with

DevSecOps tools

(SAST, DAST, dependency analysis, secrets management).

Familiarity with observability and reliability practices

(monitoring, logging, alerting, SRE concepts).

Experience with

API gateways, service mesh , or service discovery tools.

Career growth

70% of our senior leaders started in junior positions.

Continuous learning

access to our Technology Academy, Udemy courses, webinars, and company‑funded certifications.

Flexibility

remote work options, flexible working policies, and social benefits (meal vouchers, transport, childcare support, private health insurance, etc.).

Well‑being

our

WeCare program supports employees in critical situations.

Personal development

annual training budget to boost both your hard and soft skills.

📌 IA ENGINEER (Madrid)
🏢 Amaris Consulting
📍 Madrid