Freelancer profile translated to English.
Back to original languageAbout Thomas
Thomas Teschitsch, Technical Lead & Software Craftsman
I am a graduate engineer from ENSIMAG and have been a developer for over ten years. I started with a DUT in Computer Science — top of my class — then worked for seven years on .NET management software, where I progressively took on the technical mentoring of a team and project structuring. These years gave me solid experience in legacy code, technical debt, software quality, and knowledge transfer.
I then joined CDiscount's finance department for three years, in a highly heterogeneous and industrialized environment, combining .NET, APIs, automation, and various tools. This period taught me to navigate complex systems, clarify dispersed architectures, and make tools more reliable and easier to maintain.
Today, I work as a technical lead to help teams regain control of their projects: simplify, structure, document, secure, transfer. My approach has remained the same since the beginning: do it right, do it useful, do it clean.
French
Native or bilingual
English
Conversational
Japanese
Basic
Spanish
Basic
Greek
Basic
Can work on-site
Saintes (up to 50km), Niort (up to 10km)
Experience
- PeaksysDev LeadBANKING AND INSURANCEFebruary 2023 - February 2026 (3 years)Bordeaux, France
Context
Intervention within the finance department with some HR and legal topics.Main mission: automate and make reliable internal processes related to accounting, collection, bank transfers, and employee benefits.Team composed of 2 developers, 1 PO, 1 team lead, in a highly heterogeneous technical environment and a very constrained organizational framework.Roles
- Technical referent: influence on architecture and design choices within the limits of the imposed framework
- Systematic code review, definition of standards, continuous improvement of practices
- Quality monitoring: indicators, monitoring, proactive incident analysis, and technical debt management
- Technical coaching (DDD, craft, testability, documentation) and skill development of the second developer
- Proactive proposal to relax a rigid organizational framework and improve internal workflows
Main Achievements
- Automation of business processes: generation of bank transfer files, management of seller collections, automated invoice processing, employee benefits management
- Node.js to React and REST API migration with functional redesign
- Migration of UiPath processes to C# / Playwright after studying candidate technologies with POC
- Design of a custom monitoring system for UiPath processes
Key Results
- Proactive detection of most incidents before user impact
- Over 99% technical success rate for automation executions
- Over 2 FTEs saved with automated processes
- Standardization of functional and test documentation
- Fivefold increase in processed transactions after migration to Playwright
- JADE ProjectsPresidentDIGITAL AND ITJune 2022 - Today (4 years)Saintes, France
Context
Leading and executing several internal projects aimed at structuring the company and providing tools for the team: showcase website, intranet, internal APIs, and a small mobile game.Mentoring an apprentice for two years, welcoming interns for observation, and supporting two individuals in career transition.Building standards and organization in continuous improvement, with a strong emphasis on code and deliverable quality.Roles
- Design, scoping, and leadership of all internal projects
- Technical referent: architecture choices, standards, best practices
- Mentoring an apprentice and supporting individuals in career transition
- Progressive implementation of a technical and documentary organization
- Systematic code review, knowledge transfer of craft and DDD practices
Main Achievements
- Showcase website: eco-responsible design without framework (HTML/CSS/JS/PHP)
- Intranet: centralized hub for the team, integrating two APIs
- Accounting API (C#): accounting and financial management
- HR API (PHP): employee and associated data management
- Development of a mobile game in Kotlin (prototype for common skill development)
Key Results
- Skill development of the apprentice and individuals in career transition
- Structuring of internal tools used daily by the team
- Controlled eco-score for website pages (B or better)
- ISAGRISoftware Development EngineerSOFTWARE PUBLISHINGOctober 2015 - June 2022 (6 years and 8 months)60000 Beauvais, France
Context
Development of business software for accounting firms and AGCs: client, employee, and contact management, mission statement generation, invoice generation, expense entry, and accounting.Involvement in a mature, heavily used product with challenges in stability, performance, and software quality.Worked within a team of 10 developers, then a transverse support team, participating in transverse groups (automated testing, application security).Roles
- Development and maintenance of core functional modules
- Management and maintenance of continuous integration pipelines and quality monitoring
- Participation in the validation of functional analyses and writing complete technical analyses
- Contribution to transverse groups on testing methodologies and application security
- Referent for the unit testing framework
Main Achievements
- Responsible for the unit testing framework: improvement of the internal framework, indicator monitoring, developer training, documentation, and demanding daily monitoring
- Contribution to transverse groups
- Development of transverse automated testing tools, and team training
- Application security training and audits
- Implementation of continuous integration: optimization of integration pipelines, SonarQube administration, reverse engineering documentation, and automation of deployment pipelines
Key Results
- Improved code quality and reliability through the strengthening of the testing framework
- Facilitated adoption of unit tests by teams through documentation and training
- Active participation in the maturity increase of testing and security practices
Recommendations
Be the first to recommend Thomas
Help this freelancer shine by sharing your experience working together.
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4
Education
- DUTIUT Reims2011Informatique
- Engineering DegreeENSIMAG2015Informatique et mathématiques appliquées