OPEN TO REMOTE OPPORTUNITIES

Hands-on leadership for mobile teams.

/ MOBILE LEADERSHIP · FLUTTER · ARCHITECTURE

AVAILABLE FOR CONVERSATIONS

MOBILE TECH LEAD / SENIOR FLUTTER ENGINEER

Daves Balthazar.

Mobile Tech Lead & Senior Flutter Developer

I lead mobile engineering delivery while staying hands-on with Flutter and Dart. My work spans app architecture, code reviews, mentoring, CI/CD, banking and Pix features, complex integrations and reliable releases for distributed teams.

São Paulo, Brazil Remote · LATAM / International+55 (11) 99282-5958

LinkedIn Profile WhatsApp

Years of hands-on
Flutter & Dart

20+

Years in technology
& leadership

52K+

YouTube community
subscribers

500+

Flutter & Dart
technical videos

01 / PROFILE

Leadership profile

I'm a Mobile Tech Lead and hands-on Senior Flutter Engineer. I connect product needs to mobile architecture, practical engineering standards and reliable delivery while remaining involved in the Flutter/Dart codebase.

My background includes over two decades of technology and team leadership, including CTO responsibilities, and more than eight years with Flutter/Dart. I've worked across banking, Pix, cards, fleet connectivity, fintech and enterprise apps, collaborating with international remote teams.

Engineering leadershipHands-on FlutterBanking · Pix · CardsMentoring & code reviewsInternational teams

02 / EXPERIENCE

Leadership & delivery.

PROJECT HIGHLIGHTS · MOBILE DELIVERY

Selected leadership and hands-on delivery experience grouped by responsibility and product domain rather than overlapping employment dates. Employer and client names are intentionally omitted.

◈

INTERNATIONAL ENGINEERING DELIVERY

Mobile Tech Lead · Senior Flutter Engineer

Led engineering decisions and hands-on Flutter delivery for complex cross-platform applications with internationally distributed product and engineering teams.

Owned architectural decisions, code reviews, standards, technical documentation and production troubleshooting
Designed reusable Flutter modules with BLoC/Cubit, navigation, authentication and REST API integrations
Coordinated requirements, quality practices, mentoring, CI/CD and production releases with product, QA and backend partners

Technical ownershipFlutter · DartBLoC/CubitMentoringInternational teams

▣

BANKING · PIX · CARDS

Mobile Technical Leadership · Financial Products

Delivered and shaped financial mobile features spanning digital banking, Pix transactions, QR-code flows, automated Pix and card modules in Flutter applications.

Implemented mobile experiences for Pix, recurring/automatic Pix, QR-code payments and cards
Integrated authentication, identity-verification SDKs and financial APIs into Flutter flows
Worked with product rules, validation, transaction feedback and scalable app structure

BankingPixCardsQR CodeFinancial APIs

⌘

MOBILE PLATFORM ARCHITECTURE

Flutter Architecture · Technical Standards

Defined mobile architecture and reusable Flutter foundations for multi-application initiatives, aligning implementation patterns with maintainability and testability.

Collaborated with architects on a shared Flutter layer to support additional mobile products
Applied Clean Architecture, SOLID, MVVM and pragmatic state management conventions
Set component boundaries, data/API integration patterns and engineering standards across teams

Clean ArchitectureDesign systemsFlutter platformSOLID

▥

MULTI-PRODUCT TEAM LEADERSHIP

Flutter Team Lead · Cross-Domain Delivery

Coordinated developers and architecture choices across diverse product domains, including banking, benefits, healthcare, energy, cryptocurrency and credit-card products.

Provided mentoring, code review and shared Flutter/Dart engineering standards
Aligned engineers around unit, widget and integration testing practices
Supported delivery planning and collaboration across multiple products and stakeholders

Team coordinationQuality practicesCode reviewFlutterAgile

◇

CONNECTIVITY · FLEET · LOGISTICS

Mobile Lead · Device & Location Integrations

Led or coordinated Flutter work for vehicle and delivery platforms integrating mobile UI, connectivity, geolocation and release operations.

Implemented BLE/Bluetooth, location, geofencing and real-time monitoring flows
Delivered route- and map-based logistics experiences connected to backend services
Coordinated app refactoring, CI/CD and distribution through Google Play and the App Store

BLEGeofencingApp publishingCI/CDNative mobile

↗

PERFORMANCE · CODE QUALITY

Senior Mobile Engineering · Optimization

Combined hands-on application improvements with team enablement, focusing on architecture clarity, maintainability and user-perceived performance.

Helped reduce app loading times by 60% in a previous engagement
Worked with UI/UX and engineering teams on production quality and responsiveness
Supported refactoring, predictable state management and internal technical learning

PerformanceRefactoringArchitectureTeam enablement

▦

CROSS-PLATFORM PRODUCT EXECUTION

Senior Flutter Engineer · Mobile & Web

Delivered Flutter products for mobile and web, balancing feature development, automated testing and technical collaboration with geographically distributed teams.

Developed reusable BLoC- and Riverpod-based features for consumer and enterprise applications
Implemented Firebase, API integrations, native capabilities and release-ready user experiences
Participated in unit, widget and integration tests throughout product delivery

Flutter WebBLoCRiverpodFirebaseTesting

◉

EARLIER CTO · TECHNOLOGY MANAGEMENT

Technology Leadership · CTO & Team Management

More than 20 years of broader experience in software development and technology leadership, including CTO responsibilities and cross-functional team management before and alongside mobile engineering.

Led technology strategy and multidisciplinary engineering teams
Coordinated cross-functional projects using Agile practices including Scrum and Kanban
Connected business priorities, architecture decisions and execution of software delivery

CTO experiencePeople leadershipStrategyScrum · Kanban

Earlier leadership experience

Senior engineering management, CTO responsibilities, mobile and full-stack delivery across digital products and cross-functional teams since 2001.

03 / EXPERTISE

Lead + engineering toolkit.

Mobile leadership grounded in practical Flutter engineering, architecture standards, quality practices and experience with complex financial and native integrations.

Mobile engineering leadership

Technical ownershipArchitecture decisionsMentoring engineersCode review & standardsCross-functional planningProduct-to-production deliveryRemote & distributed teamsTechnical documentationAgile / Scrum / KanbanProduction incident support

Flutter & Dart expertise

Flutter / DartBLoC / CubitRiverpod · ProviderGetX · MobXGoRouterDio · RetrofitFreezedFirebase servicesiOS / AndroidFlutter Web / Desktop

Banking & financial platforms

Digital bankingPix and automatic PixQR-code payment flowsCredit-card modulesFinancial API integrationIdentity verification SDKsAuthentication journeysTransaction feedbackFintech app deliveryRegulated product awareness

Architecture & quality

Clean ArchitectureSOLID / Clean CodeMVVM / MVCTDDDependency boundariesUnit testsWidget testsIntegration testsDesign systemsApp performance

Release & mobile operations

CI/CD pipelinesGit · GitHubGitLab / BitbucketApp Store deliveryGoogle Play publishingCrashlyticsProduction debuggingREST / GraphQLMobile performancePlatform integration

Complex product integrations

Native Swift / KotlinBLE / BluetoothNFCGeolocationGeofencingMaps / routingRealtime monitoringFirebaseThird-party SDKsDevice permissions

04 / HOW I WORK

How I lead.

Architect for change

Clear boundaries, reusable components and pragmatic patterns that help software evolve as products grow.

Ship with confidence

Automated tests, CI/CD, code reviews and careful release workflows across mobile platforms.

Lead by building

Mentoring, technical decisions and hands-on delivery alongside product, design and engineering teams.

YOUR NEXT MOBILE TECH LEAD

Let's lead and ship
your next mobile product.

Looking for a hands-on Mobile Tech Lead who can guide architecture, mentor engineers and ship Flutter apps? Let's connect on LinkedIn or WhatsApp.