Senior Full-Stack Engineer

Faktion | AI Solutions & Advisory; Antwerpen; Hybrid; EUR 90,000 - 120,000; Full time

Benefits offered by this job

Company car

Fuel card

Mobility budget

Health insurance

Laptop

Smartphone

Innovation budget

Team events

Hybrid working

Job summary

Faktion | AI Solutions & Advisory is seeking a Senior Full Stack Engineer in Belgium to lead architecture, development, and delivery of enterprise-grade AI-enabled applications. You will mentor a team, drive technical roadmaps, and collaborate with AI/ML, product, and business stakeholders.

You bring 5+ years in full-stack dev, 3+ in leadership, and deep expertise in TS, React, Node.js, GraphQL, and cloud services. A hybrid work policy and competitive package are offered.

Qualifications

• Minimum 5 years in full-stack software development with 3+ years in senior leadership
• Extensive hands-on experience with TypeScript, React, and Node.js
• Strong experience designing GraphQL APIs and integrating with front-end frameworks

Responsibilities

• Lead design, development, and deployment of scalable full-stack apps
• Collaborate with AI/ML teams, PMs, and stakeholders to translate requirements
• Define and drive technical roadmaps, manage lifecycle and delivery
• Oversee development of robust web apps using TypeScript, React, Node.js
• Mentor and lead a team of full-stack developers, fostering excellence
• Champion automation for development, testing, and deployment
• Lead code reviews and ensure quality, maintainability, and scalability
• Establish validation/testing strategies; ensure product quality
• Document architecture decisions and system designs; monitor performance
• Guide entire SDLC from concept to deployment and scaling
• Drive technical innovation and evaluate new technologies

Skills

Team leadership

Mentoring

Communication

TypeScript

React

Node.js

GraphQL

CI/CD

Cloud platforms

Database design

Education

BSc/BA in CS or Engineering

MSc is a plus

Tools

GraphQL APIs (Apollo/TypeGraphQL)

NestJS

React Query / Apollo Client

NxDev / Turborepo

Docker

Kubernetes

Azure / AWS services

PostgreSQL/MySQL

MongoDB

Job description

Join Faktion, a leader in designing and developing enterprise-level AI solutions across various sectors. We are at the forefront of machine learning and artificial intelligence, creating innovative solutions that drive the future.

We are looking for a Senior Full Stack Engineer to join our dynamic team, provide technical leadership, and contribute to our ground-breaking projects and products. As we are building enterprise-grade production-deployed applications, we are looking for an experienced leader who can guide the development of robust, secure, and scalable applications while mentoring team members.

Key responsibilities

• Lead the design, development, and deployment of high-quality software architecture and complex, scalable full-stack applications.
• Collaborate closely with AI and ML engineers, Product Managers, and Business Stakeholders to translate complex requirements into efficient, high-quality software solutions.
• Define and drive the technical roadmap; identify, prioritize, and delegate tasks within the software development life cycle, ensuring timely and high-quality delivery.
• Oversee and actively contribute to the development and maintenance of robust, scalable, and high-performance web applications using TypeScript, React, and Node.js, ensuring adherence to best practices and coding standards.
• Mentor, coach, and lead a team of full-stack developers, fostering a culture of technical excellence, collaboration, and continuous improvement.
• Champion and implement automation for development, testing, and deployment processes using appropriate tools and scripting.
• Lead code reviews, provide constructive feedback, and ensure code quality, maintainability, and scalability.
• Establish and oversee comprehensive validation and verification testing strategies to ensure product quality.
• Ensure comprehensive documentation of architectural decisions, development phases, and system designs; lead efforts in system monitoring, performance optimization, and incident resolution.
• Lead and guide the team through the entire software development lifecycle, from concept and architectural design through to deployment, maintenance, and scaling.
• Drive technical innovation, evaluate and recommend new technologies, and promote best practices within the engineering team.
• Excellent written and verbal communication skills in native Dutch and English (French is a plus).
• BSc/BA in Computer Science, Engineering, or a related field (MSc is a plus).
• Proven experience of minimum 5 years in full-stack software development, with at least 3 years in a senior engineering or technical leadership role, demonstrating successful project delivery and team leadership.
• Extensive hands-on expertise in software development with TypeScript, React, and Node.js.
• Strong experience designing, building, and maintaining GraphQL APIs (e.g., Apollo, TypeGraphQL) and integrating with front-end frameworks (e.g., react-query, Apollo Client).
• Experience with NestJS for building both GraphQL and REST APIs, leveraging its modular architecture, built-in decorators, and robust support for scalable backend applications.
• Proficiency in modern CSS and Tailwind and experience working with component libraries such as ShadCN, with a strong focus on building responsive, accessible, and high-performance user interfaces.
• Deep understanding and practical experience with relational databases (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g., MongoDB), including data modeling, performance optimization, and schema design.
• Proven experience architecting, developing, and managing large-scale applications, preferably utilizing monorepos (e.g., NxDev, TurboRepo).
• Experience with various testing frameworks (e.g., Jest, Cypress) and establishing comprehensive testing strategies (unit, integration, end-to-end).
• Strong experience in designing, deploying, and managing applications on Microsoft Azure cloud environment or AWS (e.g., App Service, Azure Functions, AKS, Cosmos DB, Azure SQL).
• Exceptional analytical mind with strong problem-solving aptitude and the ability to tackle complex technical challenges and make sound architectural decisions.
• Experience in designing and implementing robust CI/CD pipelines (e.g., Azure DevOps, GitHub Actions).
• Experience with containerization and orchestration technologies (e.g., Docker, Kubernetes).
• Demonstrated ability to lead and mentor a development team, fostering a collaborative and productive environment.
• Excellent organizational, leadership, and interpersonal skills.
• Experience in solution architecture and driving technical direction for software projects.

Following experiences are a plus

• Demonstrated leadership skills, including team management and technical mentorship.
• Prior experience in software startups and corporate environments, providing balanced strategic insights.
• Hands-on experience with AI technologies, including integrating AI models into applications or working with AI-driven product features.
• Familiarity with data processing, MLOps, and machine learning concepts and workflows.
• Worked with ReactNative or other mobile development frameworks.
• Active contributions to open-source projects or strong engagement with the tech community.

We offer

• A rewarding salary package that includes additional perks like a company car and fuel card or a mobility budget, comprehensive hospitalization and group insurance, along with a top-tier laptop and smartphone.
• Benefit from a company culture that stimulates both individual and team development, fostering your professional and leadership growth.
• Utilize your innovation budget for engaging in exciting, educational, and challenging open-source projects within your guild.
• Participate in team-building activities and gatherings, a great opportunity to unwind and engage with our vibrant team initiatives.
• A flexible hybrid working-policy to choose where, how, and when you want to work.

At Faktion we build AI, and we use it thoughtfully in our own processes too. During your application, AI tools may help us with practical steps, like checking that your documents came through complete. They never decide who moves forward: every application is read by a real person on our team, and every decision is made by a human. Curious how this works, or how your data is handled? Just ask, we're happy to explain.