Lead iOS Developer

BIMM is booming, so we’re looking for a Lead iOS Developer with hands‑on Swift/Swift

UI experience and working knowledge of Android/Kotlin, and a strong interest in agentic AI systems that generate and support production‑grade native mobile applications.

Local candidates (GTHA) will be asked to join us at BIMM HQ (Distillery District) 2 days per week. We are open to remote candidates across Canada – you will be required to work on EST hours.

BIMM is a Toronto‑based agency that lives at the intersection of data, technology, and creativity to provide clients with high‑performing campaigns and digital products that shape connected customer experiences. We’ve helped our clients implement fully integrated CRM customer journeys, built robust digital experiences, and created national loyalty programs with decades of experience in sectors such as automotive, financial, telco, and retail.

We are creative realists, which means our ideas and solutions are grounded in the realities of our clients’ business. We believe big ideas are nothing without big results (and flawless execution); high‑performing agencies deliver high‑performing campaigns, products, and experiences; and the best solutions happen when we collaborate with clients as partners.

This is an existing vacancy, not a made‑up role — this one’s already got a desk waiting.

You have leveraged modern mobile tools and frameworks (Swift/Swift

UI, Kotlin, Jetpack Compose, and Kotlin Multiplatform) to architect and deliver iOS and Android applications from the ground up.

You are a team player who can fly solo when needed. Although you have the full support of your teammates, you are able to lead the research and solution of complex problems. At the same time, you know when to ask for help and don’t let pride or ego get in the way, because after all, you are part of a team.

This role will directly support our client Audi and have the opportunity to shape the development of their digital platform. Ultimately you will grow into leading agentic practice for mobile development.

You’ve learned about agentic systems and autonomous agents, maybe ran some in production or experimented with them a bit, and are excited to keep exploring how they can support the development of production‑grade native mobile applications.

“Initiative” is your middle name and you don’t give us a chance to chase you. We are on the hunt for people who have an innovative mindset (you still dream of that moonshot project but are currently working on your side‑gig). Is this you?

• Build a healthy, collaborative, and inclusive engineering environment.
• Communicate clearly with technical and non‑technical stakeholders.
• Ensure manual and agentic generated code is production grade, respects design guidelines and is performant across devices and all supported screen sizes.
• Work closely with Product, Design, QA, and back‑end teams.
• Stay current with new mobile capabilities and use them when they add value.

• Contribute to growing the Agentic practice for Mobile streams.
• Develop agentic systems that reliably generate production‑grade code using Swift, Swift
  
  UI, Kotlin, and related platform tools.
• Build and maintain automated evaluation pipelines (evals) for agent and skill outputs including LLM‑as‑judge scoring, regression test suites, and golden dataset validation so that prompt and model changes are measurable before they ship.
• Define strict input/output contracts for MCP tools and agent skills using typed schemas; ensure tools handle edge cases, surface structured errors, and never return ambiguous output that an LLM must interpret.
• Own the prompt engineering lifecycle for assigned tools and skills version‑controlled prompt templates, parametric input injection, and structured system/user role separation ensuring prompts are testable, reproducible, and free of implicit context drift.
• Contribute to the team's MCP tooling catalog implement, test, and document MCP‑compatible integrations.

• 5+ years of mobile engineering experience, including lead ownership and responsibilities in an agile environment.
• Experience with iOS…