> Markdown version of [/jobs/ext/2759738-senior-software-engineer-core-experiences-valencia-spain](https://www.wearedevelopers.com/jobs/ext/2759738-senior-software-engineer-core-experiences-valencia-spain). 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).

---

# Senior Software Engineer, Core Experiences - Valencia, Spain

- **Company:** Speechify
- **Location:** Valencia, Spain
- **Contract:** Permanent contract
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Microsoft Windows SDK, User-Centered Design, Backend, Kotlin, Multiplatform
- **Published:** September 6, 2026
- **Apply:** https://www.buscojobs.com.es/senior-software-engineer-core-experiences-valencia-spain-en-valencia-ID-370079428

## About the Role

Systems thinking. You know that optimizing a system requires end-to-end design, and you believe simplicity is valuable.
Speed. You work quickly to generate ideas and options and know how to decide which things can ship now and what things need time
Focus. We\'re a high-growth startup with a busy, remote team. You know how and when to engage or be heads down
Collaboration. You know how to inspire, play, and negotiate with opinionated designers, marketers, and PMs
Preferred Tech Stack:
Kotlin Multiplatform (Java experience is OK but role is Kotlin Multiplatform)
Prior experience with GCP is a plus

## Description

MissionSpeechify is the easiest way to listen to the world's information.Articles on the web, documents in the cloud, books on your phone. We absorb it all and let you listen to it at your desk, on the go, at your own speed, and with tools that make learning easier, deeper, and faster.What streaming services have done for audio entertainment, we're doing for audio information. And whatever we're doing seems to be working. We're #1 in our category, and experiencing exponential growth.OverviewWe\'re looking for a Senior Software Engineer to join our Core Experiences Team. This team builds and maintains the foundational services and SDKs that power Speechify's product experience across platforms. It\'s a critical role for someone who enjoys working at the intersection of product and infrastructure, thinks strategically, and is passionate about designing clear, reliable APIs and simple systems that directly enhance the user experience.What You\'ll DoCollaborate with Speechify's Product Teams to scope projects, find ways to reduce scope to get faster feedback from customers, navigate the integration/UX tradeoffs relevant to different product teams, and deliver solutions via our cross-platform SDKOptimize existing functionality to ship things like faster loading and more intelligent parsing by designing more efficient abstractions and improving our algorithmsShip cloud functions, lightweight backend services, and jobs using KotlinAn Ideal Candidate Should HaveSystems thinking. You know that optimizing a system requires end-to-end design, and you believe simplicity is valuable.Speed. You work quickly to generate ideas and options and know how to decide which things can ship now and what things need timeFocus. We\'re a high-growth startup with a busy, remote team. You know how and when to engage or be heads downCollaboration. You know how to inspire, play, and negotiate with opinionated designers, marketers, and PMsPreferred Tech Stack:Kotlin Multiplatform (Java experience is OK but role is Kotlin Multiplatform)Prior experience with GCP is a plusWhat We OfferA fast-growing environment where you can help shape the company and product.An entrepreneurial-minded team that supports risk, intuition, and hustle.A hands-off management approach so you can focus and do your best work.An opportunity to make a big impact in a transformative industry.Competitive salaries, a friendly and laid-back atmosphere, and a commitment to building a great asynchronous culture.Opportunity to work on a life-changing product that millions of people use.Build products that directly impact and support people with learning differences like dyslexia, ADD, low vision, concussions, autism, and more.Work in one of the fastest growing sectors of tech, the intersection of artificial intelligence and audio.The Spain BasedSalary range for this role is: 30,*******,000 USD/Year + Bonus + Stock depending on experience.Think you\'re a good fit for this job?Tell us more about yourself and why you\'re interested in the role when you apply. Include links to your portfolio and LinkedIn.Not looking but know someone who would make a great fit?Refer them!Speechify is committed to a diverse and inclusive workplace.Speechify does not discriminate on the basis of race, national origin, gender, gender identity, sexual orientation, protected veteran status, disability, age, or other legally protected status.#J-*****-Ljbffr


## Related Videos

- [The Dark Corners of Kotlin Multiplatform](https://www.wearedevelopers.com/videos/100143-the-dark-corners-of-kotlin-multiplatform)
- [Kotlin Multiplatform - True power of native code reuse](https://www.wearedevelopers.com/videos/4-kotlin-multiplatform-true-power-of-native-code-reuse)
- [Speak, Code, Deploy: Transforming Developer Experience with Voice Commands](https://www.wearedevelopers.com/videos/1159-speak-code-deploy-transforming-developer-experience-with-voice-commands)
- [Developing the Backend with Stefan Lingler, CTO at Shpock](https://www.wearedevelopers.com/videos/100360-developing-the-backend-with-stefan-lingler-cto-at-shpock)
- [Introducing Kotlin Multiplatform in an existing project](https://www.wearedevelopers.com/videos/276-introducing-kotlin-multiplatform-in-an-existing-project)
- [Shared mobility for everyone!](https://www.wearedevelopers.com/videos/64-shared-mobility-for-everyone)

## Related Articles

- [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs)
- [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers)
- [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline)
- [Spanish Business Culture and Etiquette](https://www.wearedevelopers.com/magazine/353-spanish-business-culture-and-etiquette)
- [Navigating the AI Shift](https://www.wearedevelopers.com/magazine/629-navigating-the-ai-shift)
- [Dev Digest 132 - Binging WADFlix?](https://www.wearedevelopers.com/magazine/473-dev-digest-132-binging-wadflix)