Freelance Staff Backend Engineer

About

Lisez l'aperçu de cette opportunité pour comprendre quelles compétences, y compris les compétences non techniques pertinentes et la maîtrise des logiciels, sont requises.

Trustpair stops vendor fraud before it happens. We're the automated vendor validation platform protecting 400+ enterprise companies worldwide. Since 2017, finance and procurement teams have used Trustpair to eliminate vendor fraud while reclaiming 90% of the time they once spent on manual checks. As vendor fraud grows more sophisticated, we stay ahead by combining deep expertise in financial crime with cutting-edge technology. Our core product focuses on secure, reliable vendor account validation to wipe out fraud and boost efficiency. Internally, teams across Trustpair use AI tools in their day‑to‑day work to automate repetitive tasks and unlock strategic insights that help us build and operate better. From day one, you’ll be encouraged and trained to integrate these tools into your workflow in a practical, hands‑on way. With offices in New York, Paris, London, and Milan, we're a diverse team united by a bias for action. We ship fast, learn from experiments, and tackle problems that matter: protecting billions in payments for companies worldwide. If you want to see your work make an immediate impact in financial security, Trustpair is built for you. Learn more about how we use AI in everyday work here.

Job Description

Trustpair stops vendor fraud before it happens. We're the automated vendor validation platform protecting 550+ enterprise companies worldwide. Since 2017, finance and procurement teams have used Trustpair to eliminate vendor fraud while reclaiming 90% of the time they once spent on manual checks. As vendor fraud grows more sophisticated, we stay ahead by combining deep expertise in financial crime with cutting-edge technology. Our core product focuses on secure, reliable vendor account validation to wipe out fraud and boost efficiency. Internally, teams across Trustpair use AI tools in their day‑to‑day work to automate repetitive tasks and unlock strategic insights that help us build and operate better. From day one, you’ll be encouraged and trained to integrate these tools into your workflow in a practical, hands‑on way. With offices in New York, Paris, London, and Milan, we're a diverse team united by a bias for action. We ship fast, learn from experiments, and tackle problems that matter: protecting billions in payments for companies worldwide. If you want to see your work make an immediate impact in financial security, Trustpair is built for you. Learn more about how we use AI in everyday work here.

About The Role

As a Freelance Staff Software Engineer on our Core Evaluation team, you will be a technical authority driving the evolution of our most critical asset: the fraud detection engine. This is a pivotal role where you'll architect for scale and resilience, while helping us rethink our evaluation process through the integration of LLM‑based insights.

We will bring you in to lead some of our most complex and ambitious technical initiatives, shaping advanced solutions from ambiguous requirements through to execution. Working within a dedicated squad, you will collaborate closely with our Engineering Manager, Product Manager, and engineers to turn strategic vision into technical reality and further strengthen Trustpair’s position as a market leader.

Contract type: Freelance / Contractor

Location: Paris (hybrid) or full remote from France

What You’ll Do

We’re looking for a senior freelance engineer who can quickly create impact in a scale‑up environment and operate with a high degree of autonomy.

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• Architect and Own: Design, architect, and own the technical vision for large‑scale, distributed systems at the heart of our platform, with a focus on our complex evaluation workflows.
  
• Lead Technical Strategy: Lead complex, cross‑functional technical projects from conception to completion, ensuring alignment with product strategy and client needs.
  
• Shape the Future: Partner with Product and Engineering leadership to build and refine the technical roadmap. You will identify key technical challenges and propose innovative solutions that drive our business forward.
  
• Drive Innovation: Champion a culture of innovation and continuous improvement. You will be directly involved in transforming the Trustpair engine by exploring and implementing new technologies, with a strong focus on applying LLM‑based solutions to solve complex business problems.
  
• Mentor and Elevate: Act as a technical mentor and force multiplier for engineers within your squad and across the organization, promoting best practices in software architecture, design, and strategic thinking. Help the engineering manager drive the cultural shift to strengthen the customer focus.
  
• Ensure Opera