Simple Comme Dev!

Nexpublica is a software publisher specializing in management solutions for local authorities and public sector organizations.

• Rewriting an integration module with a third-party system.
  • Reverse engineering of the existing system
  • Multi-tenant system
  • Java, Spring Boot, Spring Batch, multi-tenant SaaS, Angular
• Rewriting a public finance module (fixed assets).
  • Team of 5 developers across 3 sites.
  • Responsible for technical architecture.
  • C#, .NET 10, Entity Framework, Angular, multi-tenant SaaS
• Assisting with SVN repository migration
  • 15 years of history to Git
  • Technical migration
  • Project team support

Germen is a growing company (< 30 people), a technical subsidiary of the Garance group, specializing in user experience for life insurance and other financial product subscriptions.

Takeover of a monolithic PHP/Java system and redesign in Java/Spring (team of 2 to 4 developers, frontend and backend)

• Isolating features into dedicated microservices
• Designing a business logic orchestration module
• Migration to asynchronous logic with automatic error recovery, based on RabbitMQ
• Adapting the PHP module (new JWT-protected endpoints)
• Occasional DevOps support (Docker Swarm environment)

Migration of the system core to AWS Serverless (team of 4 backend developers)

• AWS Serverless training (Lambda, Step Functions, DynamoDB)
• Rewriting the business core in Lambda (Node + TypeScript)
  • From scratch
  • Step Functions for orchestration
  • SQS / EventBridge for communication
  • SAM for deployment

• Designing an integration module between a client system and an internal system
• Project from scratch
• Fixed scope and deadline
• Supervising 3 backend and frontend developers
• Architecture of a second module
• Support for tech leads of 3 other projects (part-time)

Team of 4 developers

• Refactoring critical functions (improved readability, testability)
• Bug fixes
• Restoring unit tests and Sonar
• Redesigning Gitlab CI pipelines

Company of < 10 people specializing in strategic data consulting for asset managers.

Code quality audit:

• Technical risks
• Best practices
• Performance scalability
• Architecture evolvability
• Recommendations: architecture, best practices

Operations audit:

• Security risks, disaster recovery plan, availability
• Recommendations: fixing Single Points of Failure

Organizational audit:

• Communication flows
• Operational risks (key person, information redundancy)
• Recommendations: coaching

Coach:

• Clarifying roles and responsibilities
• Strengthening the Product Owner role
• Transferring operational responsibility
• Applying development best practices on real-world cases

Developer:

• Rewriting a critical part of the code (best practices demo)
• FlowJS to TypeScript migration: iterative migration PoC
• Introducing quality gates (linter, prettier)
• Analyzing and fixing CI pipeline slowdowns

Team of 8 people (company: 40)

Audit:

• Operational risk analysis
• Technical options analysis (architecture, languages, frameworks)
• Choosing a new front-end stack (VueJS + TypeScript)
• Validating certain existing choices (Spring Boot, DDD, hexagonal architecture)
• Establishing an evolution plan (infrastructure and languages)

Technical achievements:

• Migration from a managed hosting provider to a public cloud
• Setting up Infrastructure as Code (Terraform, Ansible)
• Numerous prototypes
• Reverse engineering of the legacy system

Organizational achievements:

• Creating PO, front-end developer, and DevOps roles
• Ending the V-cycle and involving business experts in design
• Demos open to the entire company

Team and administrative management

• Code review, developer coaching
• Regular 1-to-1 meetings with each team member
• Reporting to management
• Decision support within the strategic committee
• Partial budget management (structural costs, CII applications, annual budget preparation)

Developer (architecture overhaul team, from monolith SaaS to Services)

• Replacing Tapestry 5 with Spring in the core software
• Developing a subsystem in Spring MVC / Angular 2 (iterative Tapestry replacement)
• Optimizing then redesigning a guarantee management application (IMDB integration, CQRS migration plan)

Developer / Tech Lead:

• Externalizing authentication
• Establishing best practices for REST APIs
• Documenting best practices and How-Tos
• Redesigning the deployment architecture and Identity Management (developer then Product Owner)

Work methods:

• Scrum, short iterations, lightweight and visual process
• Weekly demos to CTO and Product Manager
• Partial remote work

Product owner, developer and manager

• Building a new product vision for the Murex public SDK
• Migration to REST
• Lifecycle decoupling for a microservice approach
• Bilingual French / English team.

Standardization of the REST API development process: System tests, test integration into the validation chain, documentation generated at build time.

Iterative delivery, monthly demo to the sponsor

Design support for business teams (private APIs)

Pre-sales and on-site client workshops

Redesign of a Back Office module for automatic processing exception management.

Daily iteration follow-up and monthly demo to sponsors.

Unit test and UI test automation. Building entry points for the test team.

Development:

• Java / Swing rich client
• Reusable UI components
• Client and server-side data manipulation modules (aggregation, filtering, partitioning, map/reduce)
• Asynchronous processing micro-framework (Java Proxy, Guava Futures)
• Event throttler (annotations and Java Proxy)

8 to 10 people, developers and testers, Paris and Boston (USA)

Planning middleware interface development projects (15 to 20 projects in parallel, 40 releases per year).

Designing and monitoring FDA-compliant development processes.

Technical and functional risk control (interaction with critical medical systems).

Compliance with regulatory requirements: ISO 9001, ISO 13485 (medical devices), FDA approval.

C/C++ software developer (Alten, on behalf of Capsule Technologie).

Design, development, maintenance of communication interfaces with biomedical devices for a middleware application.

Writing technical specification documents and user manuals, in English.

Highly regulated environment (ISO 9001 and FDA approval).