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Senior Software Engineer SDE III

About Us

At Hiya, we’re revolutionizing voice communication to make it more secure and productive. Our mission is to protect against spam and fraud, connect businesses with customers, and secure global telecommunications.

Since 2015, when we introduced the first mobile caller ID and spam-blocking apps, we’ve been at the forefront of voice intelligence innovation. In 2016, we partnered with Samsung and AT&T to launch Hiya Protect, the first network-based spam-blocking solution. In 2019, we introduced Hiya Connect, a branded call SaaS platform that helps businesses reach more customers by phone.

Today, our Voice Intelligence Platform powers over 500 million users worldwide. Leveraging adaptive AI and audio intelligence, it delivers smarter, safer, and more productive voice interactions across networks, apps, and devices.  Our network & solution partners have grown to include British Telecom, EE, Virgin Media O2, Ericsson, Rogers, Bell Canada, MasMovil, Telenor, HP, KPMG, and more.

About the Position

This position is part of the Audio Intelligence team at Hiya, who works on building security solutions for audio and speech leveraging AI and Deep Learning. Some of our products and models include for example AI Voice Deepfake Detection or Voice Authentication, which are served via API for developers to build on top of (you can check our documentation here) in use cases like contact center operations, communications platforms or media fact checking.

The Senior Software Engineer is an Individual Contributor (IC) position whose main responsibility is to continuously evolve the architecture of our SaaS platform composed of an external REST API, a web console and different demos and integrations, including the design of new services and flows involving CRUD operations, audio streaming and model inference. This position will collaborate with colleagues in Engineering and R&D on the implementation, operation and maintenance of the platform.

What You’ll Do

Relevant tasks and technologies, with varying levels of involvement (they are all valued but not rigid day 1 requirements):

  • Build and maintain REST/gRPC backend services using Rust and Typescript.

  • Build and maintain frontend services using SvelteKit.

  • Design and maintain relational databases using Postgres.

  • Write unit/integration/E2E/stress tests using Rust, Typescript and Python.

  • Write and maintain API documentation using OpenAPI and Docusaurus.

  • Build CI pipelines using GitHub Actions.

  • Containerize services using Docker and deploy them to a K8s cluster.

  • Debug in staging and production environments using GCP tools.

  • Mentor and guide junior engineers in the team.

What You’ll Need To Succeed

  • Experience in backend engineering; ideally including low-level languages, streaming APIs and media pipelines.

  • A desire to own design and architecture end to end.

  • A philosophy of iteration and continuous improvement.

  • Understanding customer needs first and providing solutions primarily based on that.

  • Excellent communication and self-organization skills including working within and with other remote teams.

  • BSc or MS in a relevant field; 4+ years of relevant work experience.

  • Experience with the previously listed technologies or similar alternatives, and a strong desire and interest to learn the ones you may not be familiar with.

  • Proficient at collaborating and communicating with both local and remote team members in English

    The person in this role must embody Hiya’s key values of: Serving our customers, Doing rather than observing, Improving ourselves and our business, Owning and holding ourselves accountable for success, and Leading by showing up with a POV, engaging in discussion, listening respectfully to others opinions and committing to decisions.

You will have a fast start if you have experience with:

  • Rust

  • TypeScript

  • Cloud environments (GCP)

  • Kubernetes

  • Postgres

The requirements listed in the job descriptions are guidelines. You don’t have to satisfy every requirement or meet every qualification listed. If your skills are transferable we would still love to hear from you.

More Details

When determining compensation, a number of factors will be considered: skills, experience, job scope, location, and competitive compensation market data.

  • Start Date: Immediately

  • Status: Full-time (40 hours per week)

  • Type: (Hybrid 3 days p/w.

  • Location: London (151 Wardour Street, W1F 8WE)

  • Travel Requirements: Yes. Once a year travel to Seattle for the company off-site. Additional travel might be required to Spain and Budapest

  • Department: Product

  • Reports to: Director of Product

  • Direct Reports: No

 Benefits

  • Private Retirement/Pension program (company contribution of full 4% of basic salary)

  • Vitality Private Health Care

  • Donation Matching for a charity of your choice (up to $ 1000/ year)

  • WFH equipment stipend 

  • Lunch provided in the office 3x week

  • $1,000/year in Professional Development funds

  • Gym membership subsidy through Vitality and free office gym

This position is based in London, UK

We are building a team with a variety of perspectives, identities, and professional experiences.  We evaluate great candidates through a business lens and we strongly believe that diversity and unique perspectives make our company stronger, more dynamic, and a great place to build a career.

Our team has won various awards over the last 4 years from Built-in Seattle and Seattle Business Week to #86 on Deloitte Technology Fast 500 and Forbes #1 Startup Employer. Here at Hiya, we are a people-centric company focused on helping each and every one of our employees grow both personally and professionally. We feel that creating a team culture of support and empowerment to challenge the status quo results in an energized and passionate team that is continuously challenged and passionate about the work they are doing. You'll love working here if you are looking for an innovative challenge that is disrupting an industry. Come  join us! 

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Average salary estimate

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What You Should Know About Senior Software Engineer SDE III, Hiya

Join Hiya as a Senior Software Engineer SDE III and be part of a team that's transforming voice communication for a better, more secure future. Based in vibrant London, you'll have the opportunity to shape the architecture of our cutting-edge SaaS platform that actively protects users against spam and fraud through innovative voice intelligence solutions. In this integral role, you will collaborate with the Audio Intelligence team to develop and maintain robust REST/gRPC backend services using Rust and TypeScript, all while designing user-friendly frontend services with SvelteKit. Your experience with relational databases like Postgres and cloud environments, particularly GCP, will serve you well as you interact with cross-functional teams to refine systems and mentor junior engineers. We're not just looking for technical skills; we value strong communication skills and a customer-focused mindset. At Hiya, you will be known for your desire to own the entire design and architecture process, while continuously seeking improvements. If you're passionate about turning ideas into reality and pushing the boundaries of what’s possible in voice technology, we want you on our team. Think you’re the right fit? Apply today and start your journey with Hiya, where you'll have the chance to make a real impact in the telecommunications sector!

Frequently Asked Questions (FAQs) for Senior Software Engineer SDE III Role at Hiya
What are the responsibilities of a Senior Software Engineer SDE III at Hiya?

As a Senior Software Engineer SDE III at Hiya, your primary responsibilities include building and maintaining REST/gRPC backend services and frontend applications while ensuring smooth operations of our APIs. You'll work with technologies like Rust and TypeScript, design databases, and stress test your work for reliability. Collaborating with engineering and R&D teams, you'll contribute to the evolution of our SaaS platform, mentoring younger engineers and helping to maintain high standards of quality and performance.

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What qualifications do I need to become a Senior Software Engineer SDE III at Hiya?

To qualify as a Senior Software Engineer SDE III at Hiya, you typically need a Bachelor's or Master's degree in a relevant field, along with at least 4 years of experience in backend engineering. Familiarity with Rust, TypeScript, GCP, and Kubernetes is highly desirable. However, the team values transferable skills and a willingness to learn, so even if you don’t meet every single requirement, we encourage you to apply!

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What technologies will I be working with as a Senior Software Engineer SDE III at Hiya?

In your role as a Senior Software Engineer SDE III at Hiya, you'll get to work with a variety of technologies, including Rust for backend services, TypeScript for web applications, and SvelteKit for frontend development. You will also engage with relational databases such as Postgres, utilize testing frameworks in Python, and build CI pipelines on GitHub Actions—all within cloud environments like GCP and Kubernetes for deployment.

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What is the working environment like for a Senior Software Engineer SDE III at Hiya?

At Hiya, we pride ourselves on fostering a positive working environment for our Senior Software Engineers SDE III. You'll be part of a dynamic and diverse team, collaborating with both local and remote colleagues. The position is hybrid, allowing flexibility while still enjoying in-office benefits like lunch delivered three times a week. We value professional development and offer a stipend to support your growth, ensuring you feel empowered and engaged in your work.

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What kind of career growth opportunities are available for a Senior Software Engineer SDE III at Hiya?

Career growth opportunities for a Senior Software Engineer SDE III at Hiya are abundant. You’ll have the chance to take on significant responsibilities, mentor junior team members, and lead projects that shape our technology. We emphasize continuous improvement and iteration, providing avenues for personal and professional development, whether through funded training or new project involvement. If you enjoy challenges and aspire to drive innovation, there’s no limit to how far you can grow with us.

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Common Interview Questions for Senior Software Engineer SDE III
Can you explain your experience with REST/gRPC backend services?

In answering this question, emphasize your hands-on experience with building and maintaining REST/gRPC services, highlighting specific projects where you've implemented these technologies. Discuss any challenges you faced and how you overcame them to ensure effective communication between different services.

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What is your approach to database design in a SaaS application?

Here, you should address your strategies regarding relational database design, particularly with Postgres. Explain how you ensure data integrity and optimize performance, as well as how you tailor your database solutions to meet customer needs effectively.

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Describe how you manage collaboration with remote teams.

In your response, draw on examples where you successfully collaborated with remote teams, focusing on communication tools and strategies you used to foster teamwork. Emphasize the importance of clear documentation and regular check-ins to ensure everyone stays aligned.

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How do you handle challenges in code debugging?

Discuss specific approaches you take when debugging code, including using monitoring tools, logs, and testing frameworks. Providing a detailed example where you effectively identified and resolved a challenging bug will demonstrate your problem-solving skills.

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What steps do you take to ensure code quality?

You should talk about your commitment to maintaining high code quality through practices like code reviews, writing unit and integration tests, and following best practices in documentation. Mention any tools or processes you advocate for ensuring clean, maintainable code.

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Can you describe a professional project where you took ownership of the design and architecture?

Here, share a project where you were the lead on design and architecture decisions, explaining your thought process and how you gathered requirements. Highlight the impact your ownership had on the project's success and any feedback received from stakeholders.

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How do you ensure continuous improvement in your work?

Discuss techniques you use to continuously iterate on your work, such as soliciting peer feedback, reviewing code post-implementation, and keeping up with industry best practices. Highlight how you encourage a culture of learning within your team.

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What motivated you to apply for the Senior Software Engineer position at Hiya?

Reflect on your passion for voice technology and Hiya's mission to create safer communications. Sharing specific aspects of Hiya's values or achievements that resonate with you can effectively convey your genuine interest in contributing to the team.

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What is your experience with containerization and Kubernetes?

Detail your familiarity with Docker and Kubernetes by discussing instances where you successfully containerized an application and deployed it to a K8s cluster. Focus on the benefits of using these technologies to maintain scalability and reliability.

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How do you mentor junior engineers?

Your answer should include examples of mentoring you’ve done, emphasizing your approach to sharing knowledge and encouraging growth. Discuss how you present concepts in an accessible way, provide constructive feedback, and actively support juniors in their career development.

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Hiya's mission is to modernize voice with trust, identity and intelligence. We're protecting people from spam and fraud calls, connecting businesses with their customers, and helping carriers secure their networks for all.

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Full-time, hybrid
DATE POSTED
March 19, 2025

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