Open to opportunities

Sagar Ghag

@sagarghag1

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I build and lead AI-powered mobile, SaaS, and automation products with Flutter.

India

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What I'm looking for

I'm looking to build and lead custom software, mobile, SaaS, and AI-powered automation products, partnering with founders, operators, and leadership teams from product strategy and architecture through delivery.

At Kryonex Labs, I build custom software, mobile apps, SaaS platforms, and AI-powered automation for founders, operators, and leadership teams. I lead product strategy, architecture, engineering, and client relationships through a senior/advisor-led, AI-assisted delivery model.

I've delivered 20+ published apps across domains, including GPS tracking and geofencing products such as Zontra, with full lifecycle ownership from discovery through deployment. Across Critical Start, Zipdate, Doshaheen Solutions, Envention Solutions, Skygge, and Sunflower Lab, I've built cross-platform iOS and Android applications using Flutter while improving release reliability through CI/CD, automated testing, and cloud integrations.

At Critical Start, I delivered the Cyber Range module, improved test coverage by 20%, and reduced deployment time by 30% with Fastlane automation. I also mentor engineers, conduct code reviews, and work closely with product and business stakeholders to ship scalable products.

Experience

Work history, roles, and key accomplishments

Senior Software Engineer

Critical Start

Sep 2024 - Jun 2026 (1 year 9 months)

• Lead the design and development of cross-platform mobile applications using Flutter, iOS (Swift), and Android (Kotlin/Java), ensuring scalable architecture and high performance.
• Implemented Fastlane CI/CD pipelines for automated builds, testing, and deployment, reducing manual effort and accelerating release cycles.
• Managed end-to-end deployment through App Store Connect and Google Play Cons

Flutter Team & Tech Lead

Doshaheen Solutions Pvt. Ltd | Envention Solutions Pvt. Ltd | Skygge

Aug 2023 - Aug 2024 (1 year)

• Directed a team of Flutter developers to design, build, and deliver high-quality cross-platform mobile applications for iOS and Android.
• Spearheaded the adoption of emerging Flutter technologies and GraphQL APIs to improve application performance, scalability, and maintainability.
• Mentored interns and junior engineers through technical guidance, code reviews, and knowledge-sharing sessions,

Flutter Team & Tech Lead

Doshaheen Solutions Pvt. Ltd

Aug 2023 - Aug 2024 (1 year)

Directed a team of Flutter developers to build cross-platform mobile applications. Spearheaded adoption of Flutter technologies and GraphQL APIs, and mentored junior engineers.

Flutter Dart GraphQL Firestore Firebase AWS CI CD Gitlab Agile Scrum Jira Leadership Team Management Unit Testing Integration Testing

Senior Software Engineer

Zipdate

Jun 2022 - Aug 2023 (1 year 2 months)

• Led end-to-end project lifecycle management for Flutter-based applications, including requirement analysis, architecture design, development, testing, deployment, and ongoing support.
• Oversaw large codebases, ensuring maintainability, scalability, and alignment with business requirements.
• Conducted research on emerging Flutter technologies and integrated the latest frameworks and libraries i

Flutter and iOS Developer

Sunflower Lab

Feb 2020 - Feb 2022 (2 years)

• Designed, developed, and maintained Flutter and iOS applications aligned with client requirements and business objectives.
• Enhanced app UI/UX and optimised performance by integrating cloud services (Firebase, Google Cloud Services, AWS).
• Collaborated with product managers and designers to rapidly ship new iOS features using Swift and SwiftUI.
• Ensured quality and scalability of features thr