Senior Software Engineer, Fullstack - All Genders

Doodle; United States; Remote; USD 72,000 - 99,000; Full time

Job summary

Doodle is seeking a product-focused engineer to own experiments across frontend and backend, turning ideas into testable hypotheses and shipping changes that improve user and business outcomes.

You will work on interfaces with React, Next.js, TypeScript, and parts of a legacy Redux codebase, while also extending GraphQL APIs and back-end services to support experiments and features.

Qualifications

• Hands-on experience with product growth work (A/B testing, funnel optimization, activation, or conversion).
• Proficiency in JavaScript, TypeScript, React, and Next.js, including legacy Redux code.
• Experience building production apps with GraphQL and Apollo Client.
• Ability to traverse the stack, read unfamiliar code, and use AI coding tools.
• CS degree or equivalent practical experience.
• Based in Germany with work authorization; visa sponsorship and relocation are not provided.

Responsibilities

• Design and deliver product experiments, then use their results to guide follow-up work.
• Build and maintain interfaces using React, Next.js, TypeScript, and parts of a legacy JavaScript and Redux application.
• Extend backend services and GraphQL APIs to support product features and experiments.
• Instrument features with reliable tracking that respects user consent.
• Improve performance across devices and collaborate with product, design, analytics, and engineering colleagues on scheduling challenges.

Skills

A/B testing

Funnel optimization

Activation

Conversion

Education

CS degree or equivalent

Tools

JavaScript

TypeScript

React

Next.js

GraphQL

Apollo Client

Job description

Role overview

Own product work across the frontend and backend, using rapid experimentation to improve user and business outcomes. You’ll turn ideas into testable hypotheses, ship changes, assess results, and extend features wherever the problem requires—from user interfaces to APIs and services.

Responsibilities

• Design and deliver product experiments, then use their results to guide follow-up work.
• Build and maintain interfaces using React, Next.js, TypeScript, and parts of a legacy JavaScript and Redux application.
• Extend backend services and GraphQL APIs to support product features and experiments.
• Instrument features with reliable tracking that respects user consent.
• Improve performance across devices and collaborate with product, design, analytics, and engineering colleagues on scheduling challenges.

Requirements

• Hands‑on experience with product growth work, such as A/B testing, funnel optimization, activation, or conversion.
• Professional experience with JavaScript, TypeScript, React, and Next.js, plus comfort working in older JavaScript and Redux code.
• Experience building production applications with GraphQL and Apollo Client.
• Ability to work across the stack, investigate unfamiliar code, and use AI coding tools as part of day‑to‑day development.
• A computer science or related degree, or equivalent practical experience.
• Based in Germany and authorized to work there; visa sponsorship and relocation support are unavailable.

Nice to have

• Backend service development, particularly with Java, and experience designing GraphQL APIs.
• Familiarity with microservices, Kafka or other event‑driven systems, or Go.
• Experience with experimentation, feature flag, analytics tracking, or billing tools.