Senior Software Engineer, Door
Mobile Connectivity
$97.4-99.4k
Smart lock company
Be an early applicant
Smart lock company
201-500 employees
Be an early applicant
$97.4-99.4k
201-500 employees
Company mission
To deliver Building Intelligence that helps properties think ahead, reduce complexity, and quietly improve life inside.
Role
Who you are
- Applicant must have Master of Science Degree in Computer Science, Computer Engineering, or closely related field
- Two (2) years of professional experience in Software Engineering with a focus on mobile connectivity and Internet of Things (IoT) products
- Applicants must have experience in: Android SDK development using Kotlin and Java; designing and implementing BLE GATT communications; Near Field Communication (NFC) integration; Android architecture patterns such as MVVM, MVI, and Clean Architecture; asynchronous programming using Coroutines and RxJava; collaborating with hardware/firmware teams; and troubleshooting device communication using BLE sniffers, logic analyzers, and firmware logs
- Applicants are also required to have experience in dependency injection (Hilt) and unit testing, integration testing, CI/CD pipelines
What the job involves
- Develop and optimize Android applications for smart locks: Implement features for unlocking doors, data sync, and firmware upgrades over BLE and NFC to ensure fast, reliable over-the air operations
- Architect efficient communication protocols and data transfer mechanisms between smartphones and embedded lock hardware, optimizing for speed, security, and reliability in BLE/NFC connections
- Contribute to multiple products including the flagship Latch/Door Android app, companion iOS app, an Android-based intercom device app for building entry, and the OpenKit SDK that enables third-party apps to unlock doors without our native app
- Work closely with firmware engineers and backend developers to integrate mobile apps with IoT devices
- Defi ne and refi ne APIs for mobile-to-cloud communication and ensure end-to-end functionality from the mobile app through the cloud to the device
- Analyze and resolve complex issues in the field, including reading hardware logs and debugging BLE GATT communications
- Work hands-on with firmware and hardware tools to diagnose communication problems and improve system stability
- Profile and enhance the performance of Bluetooth and NFC interactions (e.g. connection latency, data throughput) to provide a “snappy” user experience for unlocking and updates
- Ensure the mobile connectivity stack is robust against interruptions and varying signal conditions
- Serve as the go-to expert on BLE and NFC within the organization
- Mentor and advise other engineers on best practices for wireless connectivity and asynchronous programming
- Stay up-to-date with the latest Android SDK features, Bluetooth updates, and IoT industry trends
- Prototype and incorporate new technologies to maintain our competitive edge in smart access solutions
- Telecommuting is permitted
- 40 hours per week. M-F: 9:00 a.m. to 5:00 p.m
Our take
DOOR, formerly Latch, specialises in keyless entry security systems enabling property owners to operate every door to their properties from a smartphone. In addition to its core business, the company also provides software that enables the remote monitoring and operation of services inside a building, like lighting, heating and air conditioning.
The business saw rapid growth across the US, as it has partnered with some of the largest real estate developers and property managers in the country, like Alliance and AMLI. Today, one in ten new apartments in the US is built using DOOR's technology. The company has also announced its expansion into commercial office space with the launch of DOOR OS for offices.
DOOR went public in 2021 at a valuation of about $1.5 billion, but has since suffered setbacks due to its rapid growth just before a market downturn, which affected both the tech and property sectors where DOOR operates. Having conducted a large-scale restructuring and rebrand in response, as well as a leadership refresh, the company is refocusing on profitability instead of rapid expansion. It has also expanded its mission to tackle building operations and automation, as well as access.
Steph
Company Specialist at Welcome to the Jungle
Insights
-48% employee growth in 12 months
Company
Company benefits
- Parental Leave DOOR provides company-supported parental leave for both primary and non-primary caregivers, along with tiered return-to-work options to support a smooth transition back to the workplace
- Flexible Time Off We offer a flexible time off policy to ensure employees have the opportunity to rest, recharge, and maintain well-being—so they can bring their best selves to work
- Flexible Working Days We support flexible work schedules, empowering employees to structure their workday in a way that best fits their personal and professional lives
- Comprehensive Health Coverage We offer medical, dental, and vision plans with multiple coverage tiers, including the option to enroll domestic partners. Healthcare and flexible spending accounts (FSAs) are available, with employer contributions to help offset costs
- Life & AD&D Insurance DOOR provides employer-paid basic life and accidental death & dismemberment (AD&D) insurance, with the option to purchase additional supplemental coverage
- Disability Benefits We sponsor both short-term and long-term disability coverage, offering financial protection in the event of an illness or injury that prevents you from working
- Retirement Planning Employees are eligible to enroll in a 401(k) Retirement Plan through Vanguard, with flexible contribution options to support long-term financial goals
- DOOR Equipment Setup! Employees get a full setup of hardware from our home line of products as well as FREE monitoring!
Company HQ
Creve Coeur Township, Olivette, MO
Leadership
David Lillis
(CEO)Previously SVP of Finance at Latch, was the CFO for RubinBrownLLP and Mastercard and was the VIce President of WellsFargo.
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