Sr fullstack engineer

Sr Fullstack Engineer - Capacity & Matching Consultant - (remote - Brazil)
Engagement OverviewInflect is engaging an independent Sr Fullstack Engineer - Capacity & Matching Consultant, engaged Rippling (acting as Contractor of Record), who will serve as the primary advisor for the Gateway and Capacity Matching cluster within the Intelligence Engine. This is an autonomous, high-impact consulting engagement focused on building and maintaining the full-stack matching-to-transaction spine, algorithmic confidence scoring, cost optimization logic, and gateway service infrastructure.

Working as an external subject matter expert, you will provide technical execution across the coupled Gateway and Capacity Matching surface while serving as cross-coverage backup owner for the Route Finder and Site Prover cluster, ensuring core platform intelligence runs with high availability, accuracy, and automated resiliency.

Who We AreWe are a US-based advisory and marketplace that is revolutionizing the way companies buy and sell digital infrastructure (Datacenter, cloud, and network services). Digital infrastructure services are the building blocks of the internet and at the core of every industry. Traditionally it's been bought manually through service provider sales people, resulting in high costs, slow procurement cycles, and services that aren't the best fit - slowing down the ability of companies to build and innovate.

Inflect's marketplace and advisory are removing friction so any company can get what they need, when they need it, with the right deal terms. By achieving our mission, we unlock businesses to build and human innovation to inflect

Specialized Technical Capabilities RequiredFull-Stack Engineering Mastery:7–10 years of professional full-stack engineering expertise, with deep production proficiency in Go (backend services) and React/Type Script (frontend interfaces).Algorithmic & Gateway Architecture: Applied experience designing, building, and tuning algorithmic matching, ranking, scoring, or recommendation frameworks, combined with API gateway and integration-heavy backend architectures.

Data & Cloud Substrate: Hands‐on experience with relational databases (Postgres), cloud deployments (AWS), event‐driven messaging, and integrating data pipelines.

Cross-Border Async Collaboration: Fluent professional English communication skills for effective cross‐border async collaboration, code reviews, and daily alignment across Brazil, Poland, and US time zones.

Scope of Services & Project DeliverablesGateway & Capacity Matching Delivery: Architect, build, and maintain Go‐based backend services and React/Type Script surfaces for Capacity Matching and the Inflect Gateway as one coupled surface.

Algorithmic Engine Optimization: Evolve matching, confidence‐scoring, and cost‐optimization logic to satisfy rigorous precision and explainability requirements.

Cross-Cluster Backup & Coverage: Serve as secondary owner and backup for the Route Finder and Site Prover cluster, participating in cross‐coverage, incident response support, and PR assessments.

Cross-Pod & Data Integration: Partner with Data Foundation and Lead-to-Cash pods to ensure source‐data quality alignments and seamless gateway transaction surface integrations.

Technical Advisory & Quality Standards: Deliver well‐tested, observable code and conduct pull‐request assessments under the pod lead's technical direction.

Definition of Success (What Strong Performance on Projects Looks Like)Gateway and Capacity Matching features are independently shipped and operating reliably in production.

Capacity Matching algorithms and gateway flows achieve strict performance and accuracy standards.

Effective backup coverage and cross-support are established across Route Finder and Site Prover clusters without single‐point dependencies.

The Gateway & Capacity Matching cluster is reliably owned and maintained end‐to‐end under pod technical standards.

Engagement Terms & Compliance StructureContract Type: Fixed‐rate monthly Independent B2 B Service Agreement executed via Rippling at $6,500-$8,000/mo based on experienceAutonomy: Complete flexibility over work schedules, location, and execution methods necessary to fulfill project deliverables and agreed milestones; holds no direct people‐management, hiring, or employee reporting mercial Relationship: Strictly B2 B consulting engagement; no employment relationship under the Consolidation of Labor Laws (CLT), paid vacation, 13th salary, or statutory employee benefit guarantees implied.