Senior Software Engineer

Filiz; United States; Remote; USD 150,000 - 230,000; Full time

Benefits offered by this job

Full remote work

Paris offices optional

Job summary

Filiz, a French SaaS startup, seeks an experienced backend leader to build and operate production-grade features end-to-end. You will design robust APIs, guide architecture decisions, and mentor the team to deliver reliable, observable systems. Remote-first with Paris office options; work with a CTO on complex, real-world problems.

The ideal candidate has 6+ years in production products, hands-on coding, and a track record as a Tech Lead, leveraging AI tools daily to improve engineering outcomes.

Qualifications

• 6+ years of experience with production products used by real users
• Built and operated a backend over time
• Covers the full cycle: product understanding, system design, development, deployment, run
• Strong instinct for edge cases and failure modes
• Makes decisions with incomplete information
• Prior Tech Lead experience
• Uses AI tools daily

Responsibilities

• Build and run features end-to-end: design, development, releases, production monitoring
• Hands-on coding, refactoring and architecture work with the CTO
• Drive PR reviews and raise code quality, modelling and maintainability
• Build robust APIs and resilient integrations for strong business constraints
• Design for reliability and observability to catch issues before users do
• Provide technical leadership and mentor developers on the team

Skills

Tech Lead

API Design

System Architecture

AI Tools

Tools

TypeScript

Next.js

NestJS

MongoDB

Redis

AWS

Job description

Responsibilities

• Build and run features end-to-end: design, development, releases, production monitoring
• Hands-on coding, refactoring and architecture work with the CTO
• Drive PR reviews and raise code quality, modelling and maintainability
• Build robust APIs and resilient integrations for strong business constraints
• Design for reliability and observability to catch issues before users do
• Provide technical leadership and mentor developers on the team

Requirements

• 6+ years of experience with production products used by real users
• Built and operated a backend over time
• Covers the full cycle: product understanding, system design, development, deployment, run
• Strong instinct for edge cases and failure modes
• Makes decisions with incomplete information
• Prior Tech Lead experience
• Uses AI tools daily

Preferred Qualifications

• Experience with TypeScript, Next.js, NestJS, MongoDB, Redis and AWS
• Experience with Sentry, BetterStack or OpenTelemetry

Benefits

• Full remote work, with optional Paris offices

About the Company

Filiz is a 30-person French SaaS startup digitising apprenticeship contracts and building an ERP for higher-education institutions. Backed by the Hexa startup studio.