Full Stack Engineer (Elixir Backend Focus)

Qiibee; Zug; Remote; CHF 140,000 - 190,000; Full time

Benefits offered by this job

Fully remote work

Equity share

qiibee tokens (QBX)

Job summary

Qiibee is seeking an AI-first Full Stack Engineer who owns backend services in Elixir with Phoenix, and frontend in React/TypeScript, to power partner APIs and dashboards across Miles & More, Etihad Guest, and more.

You will blend deep backend work with AI-powered workflows, from architecture to deployment, monitoring and improvement, ensuring reliable partner integrations and well-documented systems.

Qualifications

• 6+ years of professional software engineering, with 4+ years on the backend.
• 3+ years production Elixir with Phoenix, Ecto and OTP shipped and operated.
• Strong PostgreSQL with real SQL, transactions and performance tuning.
• Solid REST API design and background jobs (Oban) with retries.
• 3+ years React and TypeScript owning frontend features end to end.
• Experience in loyalty, travel tech, payments or FinTech industries.
• Fluent in English; AI-first mindset using coding agents daily.

Responsibilities

• Design, build and operate Elixir services with Phoenix, APIs, workers and jobs.
• Build and evolve partner-facing REST APIs with versioning and webhooks.
• Work on money-adjacent systems: ledgers, balances, settlement and reconciliation.
• Own frontend features in React/TypeScript from admin dashboards to API UIs.
• Use Claude Code daily to accelerate development while reviewing outputs.
• Review code and ensure system correctness with thorough PRs and docs.
• Collaborate with product and infra on deployment, monitoring and security on AWS.

Skills

Elixir

Phoenix

Ecto

OTP

PostgreSQL

REST API

Oban

React

TypeScript

AWS

Docker

GitHub Actions

English

Claude Code

Tools

Oban

Docker

GitHub Actions

AWS

ECS

RDS

S3

Job description

We're looking for a AI-first Full Stack Engineer with a strong backend and Elixir expertise to own partner APIs and dashboards that power the qiibee ecosystem (partnered Miles & More, Etihad Guest, and more).

In this role, you'll combine deep backend expertise with AI-powered workflows to take features through every stage — from architecture and coding to deployment, monitoring and ongoing improvement — across a double-entry ledger, partner-facing APIs and the React interfaces on top of them.

You'll be a key point of ownership for our core platform, ensuring every partner integration is correct, reliable and well documented — supported by AI at every step.

Tasks

• Design, build and operate Elixir services with Phoenix, Ecto and OTP: APIs, workers and background jobs.
• Build and evolve our partner-facing REST APIs, including versioning, outbound webhooks and delivery guarantees.
• Work on money-adjacent systems where correctness comes first: ledgers, points balances, settlement and reconciliation.
• Own frontend features end to end in React and TypeScript, from the admin and partner dashboards to the API behind them.
• Use AI coding agents (Claude Code) daily to move faster, while reviewing their output.
• Review code substantively, and act as a second pair of eyes on system correctness.
• Write the reasoning down: clear PR descriptions, architecture notes, and docs updated in the same pull request as the code.
• Collaborate with product and our infrastructure team on deployment, monitoring and security on AWS.

Requirements

• AI first: Use AI coding tools (Claude Code, Cursor or similar) every day.
• 6+ years of professional software engineering, with 4+ years on the backend.
• 3+ years of production Elixir with Phoenix, Ecto and OTP, shipped and operated, not learned on the side.
• Strong PostgreSQL: real SQL, transaction semantics and performance tuning.
• Solid REST API design and background job processing (Oban or equivalent) with retries.
• Proven experience in the loyalty, travel tech, payments or FinTech industries.
• 3+ years of React and TypeScript, strong enough to own a frontend feature outright: components, state, forms, validation and error handling.
• Working knowledge of AWS (ECS, RDS, S3), Docker and CI/CD with GitHub Actions.
• Fluent in English

Nice to have

• Built features on top of LLM APIs or AI agent workflows
• Redux Toolkit / RTK Query, LiveView, Node.js (Express) or GraphQL.
• Multi-tenant B2B platforms, multi-region architectures, observability (AppSignal, Sentry, Datadog) and SOC 2 exposure.

Benefits

• Fully remote work
• Competitive monthly salary package
• Equity share and qiibee tokens (QBX), sharing in our success
• Fast-paced remote startup environment

About us:

At qiibee, we're on a mission to turn loyalty currencies into one of the world's largest payment methods. Our points exchange platform lets businesses and loyalty programs issue and redeem loyalty rewards instantly, unlocking real purchasing power and economic freedom for their members. We're an AI-first, international team, building an increasingly agentic company where AI handles the busywork so our people can focus on what matters most: our customers.

We're looking for ambitious, high-performing people who are eager for growth, challenges, and continuous learning to help us turn our vision into reality.