# Senior Software Engineer

**Company**: PayPal
**Location**: London, London
**Work arrangement**: hybrid
**Experience**: senior
**Job type**: full-time
**Category**: Engineering
**Industry**: Technology

**Apply**: https://paypal.wd1.myworkdayjobs.com/en-US/jobs/job/London-County-London-England-United-Kingdom/Sr-Software-Engineer_R0138325-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/job/senior-software-engineer-7e11e30c-7f7/

## Description

PayPal's Ads Tech team is building a next-generation advertising platform, combining advanced AI, large-scale systems engineering, and PayPal's unique merchant and transaction insights. As a Senior Software Engineer, you'll help design and develop key parts of the platform, shape the technical roadmap, and build reliable systems capable of operating at significant scale.

**Responsibilities:**

- Design and develop core components of PayPal's advertising platform.

- Contribute to the technical roadmap and help turn complex requirements into scalable software designs.

- Build cloud-native backend systems with a strong focus on performance, resilience, and maintainability.

- Champion software craftsmanship, strong coding standards, and tools that improve code quality.

- Drive innovation and incremental improvements by taking initiative and challenging existing approaches.

- Collaborate with Product, Engineering, and other cross-functional teams to navigate ambiguity and deliver meaningful business outcomes.

- Help create fault-tolerant systems designed for high availability and disaster recovery.

- Share knowledge, support fellow engineers, and contribute to an inclusive, collaborative engineering culture.

**Requirements:**

- 10+ years of software development experience, with a strong emphasis on functional programming.

- Proficiency in at least one functional programming language, ideally Scala and its Typelevel ecosystem.

- 5+ years of experience designing and architecting scalable backend systems, including cloud-native solutions, microservices, or serverless architectures.

- Experience with functional effect systems such as Cats Effect or ZIO.

- Expertise in building fault-tolerant, highly available systems and planning for disaster recovery.

- Hands-on experience with at least one major cloud platform, such as AWS, Google Cloud, or Microsoft Azure.

- Experience developing large-scale, high-performance systems.

- Experience working within Agile or Scrum software-development environments.

**Benefits:**

- Comprehensive, choice-based programs to support all aspects of personal wellbeing.

- Generous paid time off.

- Healthcare coverage for you and your family.

- Resources to create financial security and support your mental health.

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## Skills

### Required
- Scala
- Typelevel ecosystem
- Cats Effect
- ZIO
- AWS
- Google Cloud
- Microsoft Azure
- functional programming

### Nice to have
- Python
- machine learning
- advertising technology
- payment processing

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Source: [Apply at paypal.wd1.myworkdayjobs.com](https://paypal.wd1.myworkdayjobs.com/en-US/jobs/job/London-County-London-England-United-Kingdom/Sr-Software-Engineer_R0138325-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)