Work with Swift experts trusted by the world’s top tech teams.
We've delivered hundreds of Swift development projects for applications with strict performance, security, and scalability demands. Onboard senior Swift experts in as little as 2 weeks.
4.9/5
60 client reviews
You’ve probably used products built by our Swift developers.
Our senior engineers have delivered Swift applications for leading global brands. These projects consistently involve complex backend integrations, demanding security audits, and aggressive release calendars.
We provide enterprise-grade iOS app development services, delivering products that demand strict uptime, predictable performance, and guarded data flows. Our app developers coordinate with backend, security, and design teams to align APIs, auth, and accessibility from the first sprint. We set latency budgets, instrument with MetricKit, and define release windows tied to business events. You get a resilient app that fits your architecture and deploys safely at any hour.
Large iOS apps often accumulate layout debt, accessibility drift, and UI churn from years of incremental changes. We modernize codebases by introducing SwiftUI where it adds velocity while maintaining critical UIKit surfaces. Our iOS developers view hierarchies, isolate risky patterns, and stage adoption behind feature flags. The result is a cleaner UI layer that moves faster without disrupting production.
Mixed-language codebases create maintenance overhead, security gaps, and delivery friction. We modernize them by migrating legacy Objective-C modules to Swift with measurable risk controls. Our process inventories APIs, sets version windows, and dual-runs parity tests during phased cutovers. You gain a future-ready codebase that can run on all Apple devices without interrupting ongoing development.
Monolithic Swift apps slow teams, increase build times, and create brittle dependencies. We solve this by structuring large codebases with clear module boundaries and stable interfaces. Our engineers define domains, extract XCFrameworks, standardize dependency management with SPM, and document contracts in CI. So your teams can ship independently while keeping runtime behavior predictable.
Enterprise distribution requires staged rollouts, signing discipline, and reliable telemetry. We create and operate reproducible build and release pipelines for iOS development. Our teams codify build steps, automate test runs, and manage TestFlight cohorts with rollback playbooks. Your releases become routine, while we handle the heavy lifting.
Regulated industries demand audit trails, data minimization, and controlled access at every layer. We design Swift apps that meet HIPAA, SOC 2, ISO 27001, and GDPR expectations. We apply least privilege, secure storage, and SSO with OAuth or OpenID Connect while capturing evidence throughout the lifecycle. Your products will pass audits without last-minute scrambles.
Slow launches, janky scrolling, and memory spikes erode user trust in data-heavy apps. We tune Swift codepaths for startup speed, memory efficiency, and frame stability, profiling with Instruments to optimize concurrency and validate gains under load. You see faster launches, smoother interactions, and fewer production incidents.
Field teams often work in environments where network connectivity is unreliable or nonexistent. We build robust offline experiences with conflict-aware sync, defining persistence models, batch writes, and retry policies, then verify integrity with chaos tests. So users can keep working without losing progress or data.
Their engineers perform at very high standards. We've had a strong relationship for almost 7 years."
The best partnerships are the ones you don't have to worry about. We deliver the kind of technical execution and reliability that builds long-term trust. It's why clients consistently praise our work quality and performance.
Backed by 4000+ devs
Why tech leaders choose our Swift teams:
We staff senior engineers who integrate into your workflows and maintain velocity over long roadmaps. Delivery is predictable, documentation is complete, and collaboration fits the way your team works
Speak With Our Team
Top 1% Swift Talent
We hire less than 1% of over 2 million applicants each year. You’ll work directly with experienced developers with 8-10+ years of production expertise in Swift app development. Every Swift engineer on our team has been vetted through a multi-month process that includes hands-on technical assessments and interviews.
Full-Stack Expertise at Scale
We cover the full software development lifecycle. With 4,000+ engineers across 100+ technologies, we can fill any Swift or supporting role within weeks. Whether you need to expand a team or tackle a complex initiative, our scale and expertise let you move fast without risking delivery.
Proven iOS Experience
We have been building apps for the Apple ecosystem since 2009. Our expertise isn't just in Swift, it's in the entire iOS lifecycle, from early Objective-C foundations to modern SwiftUI architectures, from discovery through App Store deployment. Plus, our experience in regulated industries means we build Swift applications that are not only well-engineered but also secure and compliant.
Hundreds of Swift projects delivered.
Our clients rely on us for Swift platforms that meet strict technical and business standards. Delivery is steady, audit-ready, and aligned with long-term product roadmaps.
A leading vehicle marketplace needed to modernize its iOS experience without slowing feature delivery. Over a 1.5-year engagement, two dedicated teams of 10 senior engineers migrated core views from UIKit to SwiftUI, fixed long-standing bugs, and shipped new capabilities such as a vehicle history filter, historical price graph, and contact-seller banner. The result was a more reliable iOS app with a cleaner codebase and a faster path for future enhancements.
A leading law enforcement service provider asked for monitoring apps that parole officers could run on many device types, with strict on-prem requirements tied to federal rules. Our 12-engineer team built native apps for Windows, Mac, iOS, and Android, plus a web app for visualization. We implemented short-lived tokens on the front end and permanent tokens on the backend to protect data authenticity, while automated deployments and UX improvements sped validation and access in the field.
R/GA engaged our senior engineers to advance Spot-On, a period and birth-control tracker. The team worked inside a mixed Objective-C and Swift codebase to deliver features like mood tracking, calendar views, predictions, and reminders. We also fixed bugs to keep performance high. Our work strengthened stability and improved user interactions without disrupting release cadence.
The ecosystem we use for Swift projects:
Our toolchain is built on a simple philosophy: we choose mature, widely supported tools that enable teams to ship reliably at scale. The stack prioritizes long-term maintainability, security, and developer productivity, avoiding niche technologies that introduce risk.
Core Language and UI Frameworks
Our approach starts with a stable foundation. We build on Swift’s core language features and favor Apple’s first-party UI frameworks, as they offer the strongest guarantees for long-term support, performance, and tooling integration.
Architecture and Modularization
To keep large applications maintainable, we enforce clear architectural boundaries. The tools we use are chosen for their ability to standardize module definitions, manage dependencies predictably, and allow independent teams to ship in parallel without conflict.
Dependency and Package Management
Our toolkit is standardized on mature, well-supported package managers that provide deterministic builds, security vulnerability scanning, and clear versioning to ensure a secure and reproducible supply chain.
Networking and Data Layer
We select networking and persistence tools based on their ability to create predictable, strictly-typed, and testable data flows. The chosen libraries are proven to handle poor network conditions gracefully.
Testing and Quality Engineering
We standardize on a multi-layered testing stack, selecting mature frameworks for unit, UI, and snapshot testing, complemented by static analysis tools that enforce code style and catch bugs before they are merged.
Build, CI, and Release Engineering
Our CI/CD toolchain is standardized on platforms that provide reproducible builds, automated signing, and support for controlled, phased rollouts. This focus on automation and reliability makes the release process predictable.
Observability and Performance
Our instrumentation stack is built on industry-standard tools for profiling, crash reporting, and real-time app health monitoring. We choose these tools for their low overhead and ability to provide actionable data under production-like loads.
Security, Identity, and Compliance
To meet security and compliance demands, we rely on battle-tested, industry-standard tools and protocols. We select first-party Apple frameworks like Keychain and Secure Enclave for hardware-backed security and integrate with established identity providers
Design Systems and Prototyping
We integrate directly with your design system. The tools we use are chosen for their widespread adoption and ability to act as a single source of truth for design tokens, components, and specifications.
Accessibility and Internationalization
We use a combination of Apple's native tools, automated scanners, and professional-grade platforms to ensure apps are usable by everyone and ready for global markets.
Our approach starts with a stable foundation. We build on Swift’s core language features and favor Apple’s first-party UI frameworks, as they offer the strongest guarantees for long-term support, performance, and tooling integration.
Get Swift results you can stand behind.
Need extra Swift expertise?
Plug us in where you need us most.
We customize every engagement to fit your workflow, priorities, and delivery needs.
Staff Augmentation
Get senior, production-ready developers who integrate directly into your internal team. They work your hours, join your standups, and follow your workflows—just like any full-time engineer.
Dedicated teams
Spin up focused, delivery-ready pods to handle full builds or workstreams. Together we align on priorities. Then our tech PMs lead the team and drive delivery to maintain velocity and consistency.
Software outsourcing
Hand off the full project lifecycle, from planning to deployment. You define the outcomes. We take full ownership of the execution and keep you looped in every step of the way.
Kick off Swift projects in 2-4 weeks.
We have reps across the US.
Speak with a client engagement specialist near you.
Tell us more about your needs. We'll discuss the best-fit solutions and team structure based on your success metrics, timeline, budget, and required skill sets.
With project specifications finalized, we select your team. We're able to onboard developers and assemble dedicated teams in 2-4 weeks after signature.
We continually monitor our teams' work to make sure they're meeting your quantity and quality of work standards at all times.
Global companies have trusted us to build and scale Swift solutions for over a decade.
Excellence.
Our minimum bar for client delivery.
Over 130 awards, accolades, and achievements showcase our quality and commitment to client success.
What tech leaders ask about Swift before pulling us in:
How senior are your Swift developers, and will we work directly with them?
You work directly with our senior, full-time engineers. Each has an average of 10+ years of experience on Apple platforms and has passed a rigorous vetting process focused on modern Swift development.
How do you vet Swift engineers for complex enterprise apps?
Every Swift developer goes through a multi-month vetting process that includes hands-on technical tests and interviews specific to Swift development. We hire less than 1% of applicants. We evaluate architecture decisions, concurrency patterns, performance profiling, and secure data handling. We specifically look for engineers with proven experience applying these practices at scale, so you get senior talent that ramps up fast.
Do you offer individual developers or full dedicated teams?
Both. We can provide individual senior Swift specialists to augment your team, or a complete, self-managed pod with a tech lead. In both scenarios, we adapt to your team's structure and workflow.
How quickly do your engineers start contributing?
Our engineers typically onboard within 2 to 4 weeks, and start contributing code fast. Because our developers are senior engineers who've worked on projects similar to yours, they ramp up quickly and make meaningful contributions from the start.
How stable are your teams over time?
Continuity matters, especially in long-term projects. We maintain high tenure across our engineering teams, giving you a stable foundation for delivery. And because we have more than 4,000 full-time engineers and thousands more coming in our hiring pipeline daily, we can quickly fill roles or rebalance teams whenever needed. When changes do happen, our onboarding and documentation processes keep knowledge intact. So delivery stays on track.
Do we own the code you write for us?
Yes, absolutely. All code, documentation, and related work product created for your project are the exclusive intellectual property of your company. Our Master Service Agreement (MSA) contains a clear IP assignment clause, ensuring you have full ownership and control over your codebase
Do you handle contracts and billing in the US?
Yes. We are a US-headquartered company, so all contracts, payments, and legal agreements are handled domestically. This simplifies the procurement process for your finance and legal teams, as you're working with a US entity under US law, with no international payment complexities.
Can you work under our security and audit requirements?
Yes, we’ve successfully delivered projects across regulated industries. Our development process is built to support strict compliance standards like SOC 2, HIPAA, and ISO 27001. Our CI/CD pipelines automatically generate audit trails that link every code change to pull request reviews, test results, and security scans. This creates a complete, traceable record for auditors without adding manual overhead for your team.
Can you migrate Objective-C to Swift without disrupting production?
Yes. Our engineers specialize in modernizing large Objective-C systems without disrupting production. We use a proven migration framework (combining feature-flag rollouts, dual-run parity tests, and bridging headers) to keep both languages stable during transition. Each cutover follows documented runbooks with rollback points, guided by teams experienced in hybrid Swift/Objective-C architectures at enterprise scale.
Can we hire you just to fix performance issues in our existing application?
Yes, we offer a dedicated performance optimization service. Our process begins with a deep performance audit using advanced profiling tools to pinpoint the root of the problem, whether it’s a CPU bottleneck, a memory leak, or an inefficient database query. We then refactor the critical code paths, resulting in a faster, more stable application and a measurably better user experience.
See why the biggest names in tech trust us with Swift app development.
Let's Discuss Your Swift Project
