> Markdown version of [/jobs/ext/4652802-software-engineer](https://www.wearedevelopers.com/jobs/ext/4652802-software-engineer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Software Engineer - **Company:** Paypal's Ads Tech - **Location:** United Kingdom - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Clean Code Principles, Agile Methodology, Amazon Web Services, Microsoft Azure, Cloud Computing, Cloud Engineering, Software Quality, Disaster Recovery, Fault Tolerance, Python (Programming Language), Machine Learning, Scrum Methodology, Systems Development Life Cycle, Software Engineering, Google Cloud, Cloud Platform System, System Availability, Backend, Functional Programming, Serverless Computing, Microservices - **Published:** November 10, 2026 - **Apply:** https://startup.jobs/senior-software-engineer-ads-tech-paypal-10721361 ## About the Role * 3+ years relevant experience and a Bachelor's degree OR Any equivalent combination of education and experience., * A highly experienced engineer with strong analytical and systems-design skills. * Deep appreciation for functional programming and its application to production systems. * A pragmatic problem-solver who can balance technical quality, scalability and business needs. * Someone comfortable working within a greenfield environment where not every problem has an established playbook. * A collaborative engineer who values collective success, constructive feedback and continuous learning. * A strong advocate for clean, reliable and maintainable code., * 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. Nice to Have * Python development experience, particularly within a machine-learning context. * Knowledge of advertising technology, payment processing or the regulatory considerations surrounding these industries. ## Description * Delivers complete solutions spanning all phases of the Software Development Lifecycle (SDLC) (design, implementation, testing, delivery and operations), based on definitions from more senior roles. * Advises immediate management on project-level issues * Guides junior engineers * Operates with little day-to-day supervision, making technical decisions based on knowledge of internal conventions and industry best practices * Applies knowledge of technical best practices in making decisions, * 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., For the majority of employees, PayPal's balanced hybrid work model offers 3 days in the office for effective in-person collaboration and 2 days at your choice of either the PayPal office or your home workspace, ensuring that you equally have the benefits and conveniences of both locations.