IA Developer

Amaris Consulting | Part of Mantu; Barcelona; Híbrido; EUR 90.000 - 120.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Meal vouchers

Transport assistance

Private health insurance

Flexible working policies

Descripción de la vacante

Amaris Consulting, part of Mantu, seeks a Senior Full-Stack Engineer to join an international team building an AI-powered payroll platform. You will contribute across the stack—from micro frontends to cloud AI agents—and integrate with enterprise payroll systems.

You will design Python-based services, develop .NET Core APIs, and work with Angular micro frontends, SQL Server databases, and Terraform for cloud infra, all while upholding security and scalable architecture.

Formación

• 7+ years of experience as a Full‑Stack or Backend Engineer in enterprise environments.
• Strong experience designing Python-based services, ideally with AI agents or cloud AI integrations.
• Solid experience with .NET Core for RESTful APIs and backend services.
• Experience with modern frontend frameworks (Angular) and web components; micro frontend architectures.
• Strong knowledge of relational databases (SQL Server) and complex queries.

Responsabilidades

• Design, build, and maintain Python-based AI agents using modern frameworks and cloud runtimes.
• Develop and maintain .NET Core APIs as downstream services for the AI layer.
• Build and integrate Angular micro frontends and web components into the enterprise shell.
• Work with SQL Server databases, write and optimize queries, evolve schemas.
• Write Terraform to define and manage cloud infrastructure.
• Integrate AI/automation into legacy payroll systems without breaking existing functionality.
• Collaborate with frontend, backend, AI, and infra teams to deliver end-to-end features.
• Enforce security and compliance best practices across the stack.

Conocimientos

Python

.NET

REST APIs

Angular

Stencil/Web components

Micro frontend

SQL Server

Terraform

Azure

Cloud deployments

CI/CD

Security best practices

English communication

Herramientas

Angular tooling

Descripción del empleo

Job Description

oin

Your mission & impact

As a

Job Description

oin 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 global group that values innovation, collaboration, and talent.

Your mission & impact

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.

Your mindset & soft skills

• 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.

Nice to have

• 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.

Why join us?

• 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.

Who are we?

Amaris Consulting, part of Mantu is an independent technology consulting firm providing guidance and solutions to businesses. With more than 1,000 clients across the globe, we have been rolling out solutions in major projects for over a decade – this is made possible by an international team of 7,600 people spread across 5 continents and more than 60 countries. Our solutions focus on four different Business Lines: Information System & Digital, Telecom, Life Sciences and Engineering. We’re focused on building and nurturing a top talent community where all our team members can achieve their full potential. Amaris is your steppingstone to cross rivers of change, meet challenges and achieve all your projects with success.

At Amaris, we strive to provide our candidates with the best possible recruitment experience. We like to get to know our candidates, challenge them, and be able to give them proper feedback as quickly as possible. Here's what our recruitment process looks like:

Brief Call: Our process typically begins with a brief virtual/phone conversation to get to know you! The objective? Learn about you, understand your motivations, and make sure we have the right job for you!

Interviews (the average number of interviews is 3 - the number may vary depending on the level of seniority required for the position). During the interviews, you will meet people from our team: your line manager of course, but also other people related to your future role. We will talk in depth about you, your experience, and skills, but also about the position and what will be expected of you. Of course, you will also get to know Amaris: our culture, our roots, our teams, and your career opportunities!

Case study: Depending on the position, we may ask you to take a test. This could be a role play, a technical assessment, a problem‑solving scenario, etc.

As you know, every person is different and so is every role in a company. That is why we have to adapt accordingly, and the process may differ slightly at times. However, please know that we always put ourselves in the candidate's shoes to ensure they have the best possible experience.

We look forward to meeting you!