Hire App Development Team

• Product-market fit sprints: turn an idea into a validated experience in four weeks with clickable flows, moderated usability sessions, and a roadmap that follows product discovery best practices.
• Scale-up acceleration: bring in React Native and Flutter experts who understand release trains, feature flagging, and growth experiments without slowing your existing squad.
• Regulated industry stabilization: improve crash-free sessions, automate compliance checklists, and implement CI/CD so healthcare, fintech, and mobility apps stay review-ready at all times.
• Experience refresh initiatives: replatform legacy codebases while uplifting UX with design systems, accessibility reviews, and KPI tracking that ensures every iteration moves the metrics that matter.

Every engagement begins with a collaborative discovery workshop, shared architecture canvas, and a success scorecard that we review together every sprint. Your stakeholders can see forecasts, risk logs, and live demos inside a shared Notion or Confluence space.

Need additional expertise beyond mobile? We can extend the team with API engineers, back-end mentors, and front-end specialists from our broader guild to keep velocity high.

We regularly benchmark priorities against insights from the GSMA Mobile Economy report so your roadmap lines up with adoption trends in your target markets.

From the first wireframe to a production release on the App Store and Google Play, we help companies ship reliable mobile apps that feel fast, look polished, and scale with their business. We focus on outcomes: fewer crashes, shorter time-to-market, and features that matter to your users.

• Native iOS teams using Swift, SwiftUI, Combine, and TestFlight automation led by our dedicated iOS pods.
• Native Android delivery with Kotlin, Jetpack Compose, Material 3, and Play Console analytics backed by Android mentors.
• Cross-platform development using React Native, Flutter, and Expo, supported by our cross-platform specialists.
• Product and UX research rooted in journey mapping, copywriting, and accessibility audits following human-centered design principles.
• API and data integration (REST/GraphQL), offline-first strategies, and data synchronization tuned for real-world network constraints.
• Cloud and mobile services: Firebase, AWS Amplify, GCP, analytics, push notifications, in-app purchases, and Crashlytics monitoring.
• Quality assurance: automated tests, CI/CD pipelines, store submission support, crash monitoring, and progressive rollout management.
• Store-readiness playbooks aligned with Apple’s Human Interface Guidelines and the Android Jetpack ecosystem.
• Team extension or project delivery with clear milestones, transparent reporting, and documentation ready for handover.

Recent example: we helped a retail marketplace launch a loyalty app in 90 days, introducing biometric authentication, personalized offers, and a reporting dashboard that cut manual reconciliation time by 60%. Dive into similar stories in our case studies library.

• Product mindset: we challenge assumptions with data, capture user stories, and co-write testable hypotheses that guide every sprint.
• Senior engineers only: pragmatic leaders comfortable pairing with your architects, mentoring juniors, and owning outcomes end-to-end.
• Nearshore collaboration: US-friendly time zones, fluent English, and transparent communication across Slack, Jira, and shared workspaces.
• Platform expertise: deep knowledge of iOS, Android, cross-platform frameworks, and adjacent capabilities like nearshore product development.
• Transparent delivery: weekly demos, measurable goals, and clear stakeholder updates backed by sprint health metrics.

• Security & privacy by default: secure storage, authentication flows, SOC 2 and HIPAA awareness, and routine threat modeling by our leads.
• Performance first: smooth animations, low battery usage, and optimized app sizes validated on a fleet of real devices.
• Long-term maintainability: clean architecture, comprehensive documentation, and purposeful knowledge transfer before every milestone.
• Store expertise: App Store and Play Store optimization, metadata A/B tests, and staged rollouts to reduce risk.
• Quality at speed: automated testing, CI/CD pipelines, and design systems that accelerate delivery while keeping brand consistency.

Kickoff toolkit

• Playbooks covering stakeholder alignment, risk registers, and roadmap co-creation sessions.
• Persona canvases and journey maps that translate discovery insights into backlog-ready stories.
• Tooling setup across Jira, Confluence, and Miro so every contributor shares the same context.

Engineering accelerators

• Reusable architecture templates tailored for Windows, iOS, Android, and cross-platform builds.
• Device lab matrix with automated smoke tests that surface regressions before release day.
• Security and performance guardrails built on OWASP checks, profiling runs, and regression dashboards.

Growth rituals

• Weekly storytelling demos and recorded Loom updates for executive stakeholders.
• Feature impact reviews tied to adoption, retention, and monetization metrics.
• Experiment backlogs with hypothesis templates grounded in mobile industry benchmarks.

Coastline Bank, a mid-market financial institution operating across six coastal states, needed to evolve its mobile wallet before an upcoming regulatory audit. Their existing apps scored 2.9 in the App Store, suffered from frequent login failures, and lacked fraud alerting for debit card users.

We embedded a product manager, iOS and Android leads, QA automation, DevOps support, and a UX writer into Coastline’s digital team. The first month focused on codebase audits, customer interviews, and a roadmap alignment workshop informed by FFIEC guidance for supervised institutions.

After stabilizing the release pipeline we introduced biometric sign-in, contextual fraud alerts, and an insights hub built on top of their existing analytics platform. Feature flags allowed us to roll out each capability to 10% of the user base before a full release. Weekly release readiness reviews and shadow testing with branch staff kept the program grounded in frontline feedback.

• Launched a modernized wallet in fourteen weeks with 63% of active cardholders adopting new biometric login in the first month.
• Improved combined App Store and Play Store rating from 2.9 to 4.6 by prioritizing onboarding, accessibility, and offline handling fixes.
• Reduced manual fraud investigations by 48% through real-time alerts and a streamlined dispute flow.
• Cut build-to-release time from seven days to under twenty-four hours thanks to automated pipelines and release templates.

“The Siblings Software crew gave us actionable insight every single week. Our compliance office signed off on the release plan, and customers finally feel safe managing their cards from their phones.” — Director of Digital Channels, Coastline Bank

Want more details? We’re happy to share redacted playbooks, dashboards, and the KPI framework we used during a quick discovery call. You can also explore additional engagements in our case study library.

Week 1 — Discovery

We host collaborative sessions, audit repositories, and map user journeys using the Atlassian Team Playbook to align everyone on goals, responsibilities, and success metrics.

Week 2 — Team calibration

Designers prepare clickable prototypes while engineers configure CI/CD, environments, and shared coding standards. We finalize Definition of Done, demo cadence, communication channels, and guardrails for security and accessibility.

Week 3 onward — Build, measure, learn

We release iteratively, monitor analytics, and review outcomes against the success scorecard. Handovers include documentation, training sessions, recorded walkthroughs, and a focus on marketing enablement for launch readiness.