Senior Backend Engineer - Kotlin (m/f/d) - English speaking

voize-l; Berlin; Hybrid; EUR 75,000 - 110,000; Full time

Benefits offered by this job

Stock options

30 vacation days

Berlin office / remote Germany

Germany Transport Ticket

Urban Sports Club

Regular company off-sites

Learning platforms (Blinkist, Audible)

Job summary

voize is hiring a Backend Engineer based in Germany to ensure smooth data flow between our products and partners. You will build and maintain integrations that connect voize with senior care and hospital software platforms.

You’ll own end-to-end delivery of integration projects, design scalable APIs, and collaborate with care facilities, hospitals, and clients. This role offers a hybrid setup with a Berlin office or remote work from Germany, plus stock options and growth opportunities.

Qualifications

• Several years of backend development and API integration experience.
• Proficiency with Kotlin and Coroutines.
• API design and development with REST or GraphQL.
• Business fluent in English (C1) to communicate effectively with customers.
• Open to travel to UK or US occasionally.

Responsibilities

• Shape the future of our integrations – Develop interfaces that seamlessly connect voize with systems in the care and medical sector.
• Build future-proof solutions – Develop a scalable API, set industry standards, and work closely with partners and clients.
• Take end-to-end ownership – From the idea and implementation to the ongoing development of our integrations.
• Architecture with foresight – Design thoughtful data models and sustainable solutions for complex systems.
• Work with impact – Your work saves caregivers time, improves documentation, and supports people who do amazing work every day.

Skills

Kotlin

Coroutines

API integration

REST/GraphQL

English (C1)

Travel flexibility

Tools

None

Job description

OverviewApplication

Why voize? Because we’re more than just a job!

At voize, we believe the greatest gift to frontline workers is time - time to care, connect, and be present. Today, that time is lost to admin work that pulls nurses away from what matters most: people.

We’re changing that by building the AI companion that frees nurses from admin, giving them back up to 30% of time. We don’t replace humans - we support and amplify their impact. Today, 2,000+ care facilities trust voize, and over 200,000 nurses rely on our AI companion to ease their daily workload.

Our mission is backed with a $50M Series A funding led by Balderton Capital, with support from HV Capital, Y Combinator and other leading VCs.

And now, we’re looking for you to join us on this mission!

Your Mission

As a Backend Engineer part of our US/UK squad based in Germany, you’ll ensure that data flows smoothly between our products and our partners' software solutions. You'll build and maintain the integrations that connect the voize with senior care and hospital software platforms.

Your Daily Business – No two days are alike

• Shape the future of our integrations – Develop interfaces that seamlessly connect voize with systems in the care and medical sector
• Build future-proof solutions – Develop a scalable API, set industry standards, and work closely with partners and clients
• Take end-to-end ownership – From the idea and implementation to the ongoing development of our integrations
• Architecture with foresight – Design thoughtful data models and sustainable solutions for complex systems
• Work with impact – Your work saves caregivers time, improves documentation, and supports people who do amazing work every day.

Your Skillset – What You Bring To The Table

• Several years of experience in backend development and API integration
• Proficiency with Kotlin and Coroutines is essential
• API design and development with REST or GraphQL
• Business fluent in English (C1) to communicate effectively with customers
• Open to travel to UK or US occasionally

Growing together – what you can expect at voize

• We are a fast-growing startup, that means you will tackle challenges, grow quickly, and make a real impact, giving healthcare professionals more time for real patient care
• We foster an open, collaborative culture with regular team events, whether you work from our Berlin office or remotely from Germany
• Become a co-creator of our success with stock options
• Generous perks: 30 vacation days plus your birthday off, Germany Transport Ticket, Urban Sports Club, regular company off-sites, and access to learning platforms such as Blinkist and Audible
• You decide when you work best, that means flexible working hours and a good hybrid set-up.

We look forward to your application and can’t wait to meet you – no matter who you are or what background you have!

Why voize? Because we’re more than just a job!

At voize, we believe the greatest gift to frontline workers is time - time to care, connect, and be present. Today, that time is lost to admin work that pulls nurses away from what matters most: people.

We’re changing that by building the AI companion that frees nurses from admin, giving them back up to 30% of time. We don’t replace humans - we support and amplify their impact. Today, 2,000+ care facilities trust voize, and over 200,000 nurses rely on our AI companion to ease their daily workload.

Our mission is backed with a $50M Series A funding led by Balderton Capital, with support from HV Capital, Y Combinator and other leading VCs.

And now, we’re looking for you to join us on this mission!

Your Mission

As a Backend Engineer part of our US/UK squad based in Germany, you’ll ensure that data flows smoothly between our products and our partners' software solutions. You'll build and maintain the integrations that connect the voize with senior care and hospital software platforms.

Your Daily Business – No two days are alike

• Shape the future of our integrations – Develop interfaces that seamlessly connect voize with systems in the care and medical sector
• Build future-proof solutions – Develop a scalable API, set industry standards, and work closely with partners and clients
• Take end-to-end ownership – From the idea and implementation to the ongoing development of our integrations
• Architecture with foresight – Design thoughtful data models and sustainable solutions for complex systems
• Work with impact – Your work saves caregivers time, improves documentation, and supports people who do amazing work every day.

Your Skillset – What You Bring To The Table

• Several years of experience in backend development and API integration
• Proficiency with Kotlin and Coroutines is essential
• API design and development with REST or GraphQL
• Business fluent in English (C1) to communicate effectively with customers
• Open to travel to UK or US occasionally

Growing together – what you can expect at voize

• We are a fast-growing startup, that means you will tackle challenges, grow quickly, and make a real impact, giving healthcare professionals more time for real patient care
• We foster an open, collaborative culture with regular team events, whether you work from our Berlin office or remotely from Germany
• Become a co-creator of our success with stock options
• Generous perks: 30 vacation days plus your birthday off, Germany Transport Ticket, Urban Sports Club, regular company off-sites, and access to learning platforms such as Blinkist and Audible
• You decide when you work best, that means flexible working hours and a good hybrid set-up.

We look forward to your application and can’t wait to meet you – no matter who you are or what background you have!