Flutter Engineer · BerlinAvailable for contracts & full-time roles

I build Flutter products from first screen to production.

5 years building maintainable, testable cross-platform applications with modern Flutter architecture and state management.

5years building mobile products
10+mobile solutions delivered
-40%operations error reduction
90%+automated test coverage
Berlin, Germany · Tunisia

English & French fluent · German A2

Selected mobile workChoose a project
Project / 01

Field operations

CRAFTBOXX

A workflow-driven product for job scheduling, time tracking, documentation, task management, and real-time synchronization.

FlutterReal-time syncClean Architecture
30%increase in operational efficiency
Product thinking
made visible
Switch project
see it live
CRAFTBOXX — Overview
1/6 · Overview
02 / Professional experience

From product idea to production.

Continuous mobile engineering delivery across field operations, banking, telecommunications, fitness, education, and smart mobility.

01

CRAFTBOXX

CRAFTBOXXCurrent role

Flutter Engineer

Leading end-to-end mobile development for scheduling, time tracking, documentation, task management, and real-time synchronization.

FlutterReal-time syncClean Architecture
30%Flutter

increase in operational efficiency

02

UPWORK · FREELANCE

Imarisha Academy

Flutter Engineer

Built subscription learning, custom exams, live competitions, in-app purchases, and a referral-led revenue model.

FlutterSubscriptionsIn-app purchases
40%Flutter

monetization growth delivered

03

INGELINE TECHNOLOGIES

OSIRIS

Flutter Engineer

Delivered real-time field operations, mapping, 90%+ test coverage, SonarQube quality gates, and faster feature delivery.

FlutterFirebaseGoogle Maps API
90%+Flutter

automated test coverage

04

SATORIPOP

Max it · DigiEpargne · RetailOps · Flex Fitness · Tawassol · Youree

Flutter Engineer

Shipped telecom, banking, retail, fitness, and EV-charging products with native integrations, payments, and production ownership.

FlutterBarcode scanningInventory workflows
−40%Flutter

reduction in manual input errors

05

MANTARAY

Electric scooter sharing

Flutter Engineer

Built real-time scooter discovery and reservations with geolocation, authentication, in-app payments, and a smooth mobile experience.

FlutterGeolocationIn-app payments
LIVEFlutter

real-time mobility product

03 / Technical toolkit

Architectural standards & stack precision.

Core mobile

Cross-platform UI delivery and dependable state management.

FlutterBlocRiverpodGetXRedux

Architecture

Modular codebases with clear separation of concerns.

Clean ArchitectureSOLIDOOPFunctional ProgrammingFlavors

Data & networking

Offline persistence, APIs, and real-time synchronization.

RetrofitFloorHiveSQLiteSecure StorageStreams

Testing & QA

Automated quality gates for confident production releases.

Unit TestingWidget TestingIntegration TestingCoverageSonarQube

DevOps & release

Repeatable build and release pipelines across app stores.

GitBitbucketGitLabCI/CDFastlane

Hardware & integrations

Native device capabilities and third-party services.

Platform ChannelsBluetooth LEBarcode & QRBiometricsBackground LocationIn-app Subscriptions
Proven domain metrics

Products across demanding domains.

500+

Flex Fitness

Online training with subscriptions, integrated payments, and premium content.

Health & subscriptions
EV

Youree

A modern smart-home charging experience for electric vehicles.

IoT & clean energy
−40%

RetailOps

Retail operations and barcode scanning that reduced manual input errors.

Inventory logistics
LIVE

Mantaray

Real-time scooter discovery, reservations, geolocation, and payments.

Urban mobility
04 / Academic foundation

Engineering degrees.

MSc

Master's Degree in Software Engineering

ESPRIM · Monastir, Tunisia

Specialization in distributed systems, mobile architectures, and quality engineering.

BSc

Bachelor's Degree in Computer Science

ESPRIM · Monastir, Tunisia

Algorithms, object-oriented programming, database design, and networking.

Communication & reach

Multilingual collaborator.

Arabic

Native proficiency

English

Full professional

French

Fluent · bilingual

German

Elementary · A2

Ready for remote & relocation

Let’s build something reliable

Need a mobile engineer who can own the product journey?

I bring product thinking, clean architecture, testing, native integrations, and production delivery to the same table.

Email me: mokhtar.oubaya@gmail.com