At Semperis, our mission is to be a Force for Good. Starting with being a great place to work. We believe that when people feel valued, supported, and empowered, they do their best work. That’s why we focus on creating an employee experience rooted in purpose, growth, and balance. Semperis has been recognized as one of America’s Fastest-Growing Cybersecurity Companies by the Inc. 5000, a DUNS 100 Top Startup to Work For, and a multi-year Inc. Best Workplace awardee.

Senior Android Software Engineer

Ready1 Mobile · Full-time · Toronto, Canada (Hybrid) · Senior IC (sole Android owner)

We're looking for a Senior Android Software Engineer to own Ready1 Android end to end. You will be the in-house Android owner on a small mobile team — hands-on individual contributor, not a people manager — shipping production features from day one alongside an iOS Engineering Team Lead, while protecting enterprises from cyber threats with some of the brightest minds in cybersecurity and Identity Access Management.

About Semperis

Semperis protects hybrid Active Directory and Entra ID environments for enterprises worldwide. Our products help security and identity teams detect, respond to, and recover from identity-driven attacks.

About Ready1

Ready1 is Semperis' enterprise crisis management platform — a secure command-and-control center for cyber crises. The mobile apps help security and identity teams triage incidents, coordinate response, join secure video bridges, chat in real time, and act when they are away from their desks. Built for enterprise environments, Ready1 supports secure authentication (MSAL / Azure B2C), multi-region services (NA / EU / AU), and reliable mobile workflows across Android and iOS.

What You'll Be Doing

You will own the Ready1 Android application as the sole in-house Android engineer: architecture, features, quality, Play releases, and production health. You will partner closely with iOS, backend, product, design, QA, and security — without another Android peer day to day — and deliver secure, supportable releases for incident-response teams operating across regions.

Your Key Responsibilities

• Own Ready1 Android end to end: technical design, implementation, testing, Play release, and post-release triage.

• Design, implement, and ship native Android features in Kotlin on a Compose-first codebase; evolve UI thoughtfully where legacy XML remains.

• Drive app architecture using Hilt, ViewModels, repositories / use cases, clear feature packages, and maintainable state management (coroutines / Flow).

• Integrate and harden networking and session handling (Retrofit / OkHttp): auth, token refresh, retries, offline/degraded modes, and multi-region routing.

• Contribute to real-time chat and video experiences using SignalR / WebSockets and Azure Communication Services.

• Own production quality: unit and UI tests, small reviewable PRs, Crashlytics / log triage, and decisive response when releases misbehave (including staged rollout pause or hotfix).

• Support and improve release machinery: Gradle flavors, signing, Play Console, internal testing, and staged rollouts.

• Apply secure mobile practices for tokens, secrets, permissions, local data, logging, and privacy — never log credentials or PII.

• Collaborate with the iOS lead and cross-functional partners to keep platform parity, clarify requirements, communicate tradeoffs, and ship on a high-throughput feature pipeline.

• Raise the quality bar through code review standards, pragmatic technical decisions, and mentoring by example — without managing a team of Android reports.

What You Bring to the Table

• 7+ years of professional Android development with a track record of shipping and maintaining production apps.

• Proven ownership: you have been accountable for a product surface or app end to end (features, quality, releases, and production issues) — not only tickets on a large pod.

• Strong Kotlin and Android SDK fundamentals; production experience with Jetpack Compose (not only greenfield demos).

• Deep comfort with coroutines, Flow, lifecycle-aware architecture, ViewModel, Navigation, and Gradle / Android Studio.

• Experience integrating REST / JSON APIs (ideally Retrofit / OkHttp) and handling authentication, token refresh, concurrent session failures, and unreliable networks without blanking critical UI.

• Hands-on Play release experience: flavors or environments, signing, internal testing, staged rollouts, and crash triage.

• Automated testing mindset (unit tests required; UI tests a plus) and disciplined Git / PR / CI habits.

• Practical mobile security instincts: secure storage of tokens/secrets, careful logging, permissions, and local data.

• Clear communication and the ability to take ambiguous requirements to a supportable release while partnering with an iOS counterpart.

• Motivation for a hands-on senior IC seat: sole Android owner on a small mobile team, delivering from day one — not building or managing an Android org.

Bonus Points

• MSAL, Azure AD B2C, OAuth / OIDC, passkeys, WebAuthn, or other enterprise identity integrations.

• Hilt or Dagger in a non-trivial multi-module or large production app.

• SignalR, WebSockets, or VoIP / video (Azure Communication Services, WebRTC, or similar).

• Cybersecurity, security operations, incident-response, or regulated enterprise products.

• Crashlytics (or similar), structured logging, feature flags, accessibility, internationalization, or design systems.

• Comfort collaborating on shared mobile product decisions across Android and iOS; familiarity with NDK / C++ is a plus, not required.

#LI-HA1

Why Join Semperis?
You’ll be part of a global team on the front lines of cybersecurity innovation. At Semperis, we celebrate curiosity, integrity, and people who take initiative. If you’re someone who sees the glass as half full, embraces challenges as growth opportunities, and values a healthy balance between work and life—we’d love to meet you.

**Semperis maintains office locations in several cities across the globe. Where the job description specifies a required location, candidates will follow our hybrid work model. This includes working up to three days per week and remotely the remaining days.

Semperis is an equal opportunity employer and will not discriminate against an applicant or employee based on race, color, religion, creed, national origin or ancestry, ethnicity, sex (including gender, pregnancy, sexual orientation, and gender identity), age, physical or mental disability, veteran or military status, genetic information, citizenship, marital status, or any other legally recognized protected basis under federal, state, or local law. The information collected by the Semperis application is solely to determine suitability for employment, verify identity, and maintain employment statistics. 

Applicants with disabilities may be entitled to reasonable accommodation under the Americans with Disabilities Act and/or other applicable state or local laws. A reasonable accommodation is a change in the way things are normally done which will ensure an equal employment opportunity without imposing undue hardship on Semperis. Please inform Semperis representative Anna Taylor, Director of Global Recruiting, if you need assistance completing this application or to otherwise participate in the application process.