Full stack Developer

Syffer is an all-inclusive consulting company focused on talent, tech and innovation. We exist to elevate companies and humans all around the world, making change, from the inside to the outside.

We believe that technology + human kindness positively impacts every community around the world. Our approach is simple, we see a world without borders, and believe in equal opportunities. We are guided by our core principles of spreading positivity, good energy and promote equality and care for others.

Our hiring process is unique! People are selected by their value, education, talent and personality. We dont present ethnicity, religion, national origin, age, gender, sexual orientation or identity.

Its time to burst the bubble, and we will do it together!

What You'll do:

- Design and develop a full-stack analytical platform, including frontend, backend, and AI components;

- Build advanced analyst-facing workflows for data exploration, synthesis, and multi-step reasoning;

- Integrate AI/LLM capabilities (e.g. retrieval, summarisation, cross-document analysis) into user-facing applications;

- Ensure transparency and traceability of AI outputs, including clear linkage to sources and reasoning steps;

- Develop scalable backend services for data ingestion, storage, retrieval, and analytics;

- Implement responsive and configurable frontend interfaces aligned with modern UI/UX standards;

- Deploy solutions in secure, restricted environments in compliance with NATO requirements;

- Produce and maintain technical documentation, architecture diagrams, and deployment guides;

- Support testing, validation, defect resolution, and system optimisation;

- full remote, based in Portugal;

Who You Are:

- 8+ years of experience in full-stack software development;

- Strong frontend expertise (React, Vue.js, or Astro);

- Strong backend expertise (Python, FastAPI, API design, service orchestration);

- Experience with high-volume data systems, search, and retrieval architectures;

- Proven experience integrating frontend applications with backend APIs;

- Hands-on experience with AI/LLM systems, including:

• Retrieval-Augmented Generation (RAG)
• AI-driven analysis and content generation
• Explainable and auditable AI workflows
• Experience with analytical or decision-support platforms

- Experience with analytical or decision-support platforms;

- Familiarity with:

• Strategic foresight analysis
• Topic modelling / topic engineering
• Source intelligence and relevance assessment

- Experience designing workflows that prioritise user control and transparency; 

- Experience deploying applications in restricted or secure environments;

- Understanding of compliance, accreditation, and secure system design;

- Ability to work within constrained infrastructure (non-standard cloud environments);

- Ability to work independently and take full ownership of system design and delivery;

- Strong problem-solving and architectural thinking;

- Experience working in high-accountability, multi-stakeholder environments;

- Excellent written and spoken English;



What you'll get:

- Wage according to candidate's professional experience;

- Remote Work whenever possible;

- Delivery of work equipment adjusted to the performance of functions;

- Benefits plan;

- And others.

Work together with expert teams on projects of large magnitude and intensity, long term together with our clients, all leaders in their industries.

Are you ready to step into a diverse and inclusive world with us?

Together we will promote uniquess!