ABED MAATALLA

Backend Engineer

Toulon, France7 yrs 6 mos experience
AI EnabledAI ML Practitioner

Key Highlights

  • 11+ years of experience in backend engineering.
  • Expert in Python-based systems and performance optimization.
  • Proven track record in scaling systems under load.
Stackforce AI infers this person is a Backend Engineer specializing in Fintech and SaaS with a focus on performance and reliability.

Contact

Skills

Core Skills

Backend ArchitectureData IntegrityPerformance OptimizationScalabilityData ProcessingSystem ReliabilityCommunity EngagementMicroservices ArchitectureContent ManagementLogistics ManagementBackend Development

Other Skills

SQLIntegration LayersTechnical DocumentationDjangoCeleryRedisPostgreSQLAPI DevelopmentData Access PatternsCI/CDDockerContent AggregationSearch MechanismsData Ingestion PipelinesMicroservices

About

I’m a Senior Backend Engineer with 11+ years of experience building and operating production systems in startup and enterprise environments. My focus is on designing and evolving backend architectures that remain reliable, performant, and cost-efficient under real production constraints. I specialize in Python-based systems (Django, FastAPI), data-intensive architectures, and backend performance engineering across APIs, databases, and asynchronous processing pipelines. My work typically sits at the intersection of system design, performance optimization, and production reliability. At Oracle, I contribute to large-scale financial systems where correctness, data integrity, and performance are critical. I work on backend components involving SQL-heavy workflows, data processing pipelines, and system integrations, with a strong focus on reliability and maintainability in regulated environments. Previously at ScaleXP and CodaBene, I worked on scaling backend systems under load, addressing performance bottlenecks, improving query efficiency, and stabilizing distributed processing pipelines. This included optimizing database access patterns, redesigning asynchronous workflows, and improving system observability to reduce production risk. Across all roles, I emphasize engineering discipline: testing strategy, CI/CD automation, observability, and clear system boundaries. I prefer incremental, measurable improvements over large rewrites, ensuring systems evolve safely while continuing to serve production traffic. I also contribute to team-level technical direction helping align engineering decisions with product constraints, and ensuring backend architecture supports long-term scalability rather than short-term delivery only. I am fluent in French, English, and Arabic, and I enjoy working in multicultural engineering environments where clarity and collaboration matter as much as technical execution. I’m currently focused on senior backend roles where I can take ownership of critical systems, influence architecture across teams, and continue working close to production systems that operate at scale.

Experience

7 yrs 6 mos
Total Experience
1 yr 9 mos
Average Tenure
--
Current Experience

Oracle

Senior Developer

Aug 2022Present · 3 yrs 10 mos · France · Remote

  • Senior backend engineer on a large-scale financial and accounting system with strict correctness, auditability, and performance requirements.
  • Responsible for backend components spanning data processing, SQL-heavy workflows, and integration layers within a complex enterprise architecture. Work focuses on ensuring system reliability, correctness, and performance under production constraints.
  • Key contributions:
  • Contributed to the evolution of backend architecture in a regulated financial system, balancing performance, correctness, and maintainability constraints.
  • Worked on data-intensive pipelines and SQL-driven workflows where query performance and data integrity are critical to business operations.
  • Applied AI and algorithmic approaches in constrained environments to improve processing efficiency and decision-support workflows.
  • Collaborated with cross-functional engineering teams to align backend design with product and UX requirements.
  • Contributed to technical documentation and internal knowledge sharing to improve system understanding across teams.
SQLData ProcessingIntegration LayersTechnical DocumentationBackend ArchitectureData Integrity

Scalexp

Senior Python Developer

May 2022Aug 2022 · 3 mos · London, England, United Kingdom · Remote

  • Backend engineer focused on performance, reliability, and scalability of a finance automation SaaS platform built with Django, Celery, Redis, and PostgreSQL.
  • Key contributions:
  • Identified and resolved critical system bottlenecks affecting production and pre-production environments, improving system stability and execution reliability.
  • Optimized core database queries and reduced performance issues impacting user-facing and internal workflows.
  • Designed and implemented backend improvements to ensure consistency between asynchronous processing and domain-level correctness.
  • Improved API structure to ensure better separation of concerns and maintainability across services and frontend integrations.
  • Introduced design patterns (Factory, Adapter) to support scalable feature evolution and reduce coupling in backend components.
DjangoCeleryRedisPostgreSQLAPI DevelopmentPerformance Optimization+1

Codabene

Senior Backend developer

Sep 2020May 2022 · 1 yr 8 mos · Paris

  • Backend engineer responsible for data-intensive systems powering traceability and analytics for manufacturers and retailers in food supply chains.
  • Worked on systems handling large-scale product and batch data, ensuring performance and reliability as the platform scaled from early adoption to production growth.
  • Key contributions:
  • Supported system scaling from ~40 to 700+ B2B clients while maintaining performance of PostgreSQL-heavy reporting and analytics workloads.
  • Optimized critical database queries and data access patterns, improving performance under high-volume reporting loads.
  • Improved system reliability by redesigning asynchronous processing flows to ensure consistency in data-sensitive operations.
  • Contributed to architectural decisions during feature evolution, reducing risk of large-scale refactoring through alternative implementation strategies.
  • Helped evolve platform from early-stage POC to production-grade system, introducing CI/CD, Dockerization, autoscaling, and Elasticsearch as system constraints increased.
  • Designed and improved monitoring, reporting, and ingestion pipelines (CSV, Excel, external APIs) enabling operational visibility and analytics.
PostgreSQLData Access PatternsCI/CDDockerData ProcessingSystem Reliability

Djiant

Lead Software Developer

Jun 2020Jul 2020 · 1 mo · Paris

  • Backend engineer contributing to the architecture of a SaaS platform for B2B communities, focused on content, search, and engagement systems.
  • Key contributions:
  • Designed and contributed to backend systems supporting large-scale community content aggregation and publishing workflows.
  • Worked on search and indexing mechanisms enabling discovery across heterogeneous data sources.
  • Built and maintained data ingestion pipelines including crawling, scraping, and validation workflows.
  • Supported multi-tenant infrastructure enabling deployment and isolation per community client.
  • Contributed to analytics features enabling platform usage tracking and content performance insights.
Content AggregationSearch MechanismsData Ingestion PipelinesBackend ArchitectureCommunity Engagement

Nucleus

Full-stack Developer

Jun 2018Jun 2020 · 2 yrs · Marseille, Provence-Alpes-Côte d'Azur, France

  • Engineer working on a microservices-based platform for blogging, affiliate systems, and SEO automation.
  • Key contributions:
  • Evolved platform from manual deployment workflows to automated, scalable multi-client infrastructure using containerized services (Docker-based microservices architecture).
  • Improved system reliability and reduced operational overhead through deployment automation (including CRM provisioning).
  • Built and maintained core product features including content workflows, user roles, payments (Stripe, PayPal), and invoicing systems.
  • Improved performance and stability of production systems as client base and usage increased.
MicroservicesDockerSEO AutomationMicroservices ArchitectureContent Management

Groupe labelle algerie

Software Developer

Apr 2017Mar 2018 · 11 mos · Algeria

  • Backend engineer responsible for a warehouse management and logistics system with reporting and operational workflows.
  • Key contributions:
  • Designed and implemented backend systems for inventory, sales, procurement, and invoicing workflows.
  • Built data models supporting multi-warehouse operations and business reporting.
  • Developed integrations including vendor-facing mobile workflows and geolocation-based features.
  • Supported system reliability and operational accuracy for business-critical logistics processes.
Inventory ManagementSales WorkflowsReportingLogistics ManagementBackend Development

Bbokrashop

Web Developer

Aug 2016Apr 2017 · 8 mos · Chlef, Algeria

  • BBOKRASHOP is an innovative company working on making shopping easier and cheaper for any employee who has limited budget.
Technical DocumentationProblem SolvingTeamwork

Lughatspace

Co Founder

Dec 2015Nov 2016 · 11 mos · Algeria

  • The world's first-ever free “Lingual” social network. Intrigued yet? What makes Lughat Space unique: is its focus in bringing language enthusiasts and learners together by teaming them up through our language partner feature, as well as offering translation services.
  • Lughat Space is the only web-platform that offers rich language learning resources while introducing you to people from different backgrounds, cultures, countries and languages. You might want to interact with our members for help or make friends with them, learn and teach together!
Technical DocumentationProblem SolvingOral Communication

Djaitland

Web and mobile developer

Jun 2015Jul 2016 · 1 yr 1 mo · Nice, Provence-Alpes-Côte d'Azur, France

  • Djaitland is innovation park for kids to learn languages using technology and follow them home using e-learning platform with adaptive games to help kids learn fast and enjoy the process.
Technical DocumentationProblem Solving

3dreams

Web & Mobile Developer

Sep 2014Jul 2015 · 10 mos · Relizane, Algeria

  • Create rich mobile applications and websites.
  • Technical management on projects in conjunction with the project management.
  • Work independently or leading a team developers.
Technical DocumentationProblem Solving

Google developer group chlef

Development Manager

Nov 2012Nov 2016 · 4 yrs · Chlef, Algeria

  • Organize events.
  • Working with Google products.
  • Team building and training.
Technical DocumentationProblem Solving

Microsoft student partners algeria

Software Developer

Sep 2012Nov 2017 · 5 yrs 2 mos

  • Mastering Microsoft products.
  • Organize events.
  • Teamwork.
Technical DocumentationTeamworkProblem Solving

Education

Université Hassiba Ben Bouali, Chlef

Master’s Degree — Computer Software Engineering

Jan 2013Jan 2015

universite hassiba ben bouali

Graduate — Computer Science

Jan 2010Jan 2013

Stackforce found 100+ more professionals with Backend Architecture & Data Integrity

Explore similar profiles based on matching skills and experience