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Mobile Developer

EmergiTEL

Job Location:

Toronto - Canada

Yearly Salary: CAD 100000 - 120000

Posted: 29 September 2026 (22 hours ago)

Application Deadline: 27 December 2026

Vacancies: 1 Vacancy

Job Summary

emergiTEL is hiring a Mobile Developer for our client in the Digital identity industry. This is a Permanent role.

Compensation: $100000 - $120000/year
Location: Toronto ON

Job Description (English)

Role Overview

The Mobile Developer owns the native iOS and Android SDKs that partners embed in their own applications serving as the client-side entry point to identity and fraud-prevention services including SIM-based authentication aligned with GSMA standards.
This is SDK engineering rather than app engineering. The deliverable is a small stable well-documented library that other developers integrate once and depend on for years.
The role covers the full product surface including public API design deep platform and mobile-networking work packaging and release reference applications and integration documentation.
Because the SDKs run inside banking and fintech applications correctness backward compatibility binary footprint and privacy are treated as first-class requirements.

What Youll Do

Own the design development testing and release of the native iOS (Swift) and Android (Kotlin) SDKs end to end.
Design public SDK interfaces that are small hard to misuse and stable across releases with deliberate versioning deprecation and backward-compatibility practices.
Handle the realities of mobile networks including Wi-Fi and cellular transitions dual-SIM and eSIM devices captive portals carrier variation timeouts and retry behaviour.
Keep the SDK lightweight and dependency-light by minimizing binary footprint avoiding transitive dependency conflicts inside host applications and collecting no more data than an integration requires.
Build and maintain reference applications and sample integrations for both platforms that demonstrate real production-shaped integration paths.
Write and own developer-facing documentation including integration guides API references migration notes and troubleshooting runbooks.
Own SDK distribution and release engineering including Swift Package Manager CocoaPods XCFramework Maven Central/Gradle signed artifacts changelogs and reproducible CI builds.
Define a test strategy appropriate to code that cannot be hot-fixed in production including unit tests instrumented and device-farm testing across OS versions and device models and simulated carrier conditions.
Support partner integration teams by triaging integration issues reproducing customer-reported failures from logs and feeding that feedback into API and documentation improvements.
Instrument the SDK for diagnostics and error reporting that helps partners debug quickly without exposing end-user data.
Track iOS and Android platform releases and proactively address breaking changes in permissions privacy manifests and network stack behaviour.
Partner with Backend QA and Security teams on service contracts test coverage and security reviews surrounding the SDK.
Actively participate in agile ceremonies as part of a Scrum team helping drive feature delivery and platform modernization.

What You Bring

Must-Have Skills & Experience

Degree in Computer Science Software Engineering or equivalent practical experience.
5 years of professional mobile development experience.
Experience building and shipping SDKs or libraries consumed by third-party developers is a strong asset.
Current hands-on production experience on both platforms: Swift for iOS and Kotlin for Android.
Proven public API design skills including interface design semantic versioning deprecation strategy thread-safety guarantees and clear error-handling contracts.
Strong understanding of mobile networking including HTTP/TLS certificate handling connection lifecycle radio and Wi-Fi transitions and behavior under unreliable network conditions.
Experience packaging and distributing libraries using Swift Package Manager CocoaPods XCFramework Maven Central/AAR including artifact signing and release processes.
Strong asynchronous and concurrency skills using Swift Concurrency/GCD and Kotlin Coroutines.
Solid automated testing discipline for library code including mocking network layers and testing across OS versions and device configurations.
Proficiency with Git and CI/CD tools for mobile development such as Fastlane GitHub Actions Bitrise or similar.
Security-conscious mindset with experience in secure storage (Keychain Android Keystore) certificate pinning code obfuscation and careful handling of personal information.
Excellent written communication skills with the ability to produce integration documentation that partner developers can follow without requiring support.
Strong problem-solving and analytical skills with a detail-oriented approach to compatibility and edge cases.

What Sets You Apart

Prior experience at a vendor shipping SDKs into regulated customer environments such as banks fintechs or insurers including security review penetration testing and SBOM processes.
Familiarity with device attestation and anti-fraud signals including App Attest DeviceCheck Play Integrity and root/jailbreak or emulator detection.
Experience wrapping native SDKs for cross-platform frameworks such as React Native Flutter or Cordova.
Hands-on use of device farms such as Firebase Test Lab BrowserStack or AWS Device Farm and testing against real carrier SIMs.
Backend familiarity with Python Java and REST API design sufficient to help shape the service contracts consumed by the SDK.
Experience with mobile observability and crash reporting at scale.
Contributions to open-source mobile libraries public technical writing or developer advocacy.

Ideal Candidate

Has shipped code that other developers depend on and demonstrates excellent SDK design principles with small intuitive and reliable interfaces.
Equally comfortable working in Swift and Kotlin.
Interested in understanding mobile networking behaviour at a deep level.
Treats unclear integration documentation as a product quality issue and continuously improves developer experience.
Balances platform expertise technical rigor reliability security and usability in every release.

Vacancy Status / Statut du poste
This is an active position currently open for hiring.

Use of Artificial Intelligence / Utilisation de lintelligence artificielle
emergiTEL uses artificial intelligence to help identify and source candidates for this role. All assessment and selection decisions are made by our recruiters a human is always involved and no applicant is evaluated or rejected by automated means alone. / emergiTEL a recours à lintelligence artificielle pour aider à identifier et à trouver des candidats pour ce poste. Toutes les décisions relatives à lévaluation et à la sélection sont prises par nos recruteurs ; une intervention humaine est systématiquement assurée et aucun candidat nest évalué ou rejeté uniquement par des moyens automatisés.

Required Experience:

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