Job Description

Mission Overview:

Keystone Solutions is seeking an Odoo Developer for a consultancy mission at a client site. You will be responsible for building financial integrations that ensure accuracy even after millions of transactions. This role involves working with Odoo as the ERP and billing engine while integrating it with AMPECO, the new Charge Point Management System (CPMS).

Key Responsibilities:

• Configure and develop Odoo modules for financial flows including invoicing, accounting, contracts, subscriptions, analytic accounting, payments, and dunning.
• Build and maintain integration between the CPMS and Odoo, ensuring master data synchronization and invoice generation.
• Develop robust interfaces with payment service providers, including automated reconciliation and exception handling.
• Design systems for volume and failure, ensuring clear error states and no data loss.
• Translate functional specifications into testable, documented code, challenging specifications when necessary.
• Adhere to the standard-first principle, minimizing customization and documenting deviations.
• Write automated tests, participate in code reviews, and support CI/CD and deployment pipelines.
• Set up monitoring and alerting for financial interfaces to detect issues proactively.
• Contribute to technical design decisions with IT and architecture teams.

Who You Are:

• Solid experience as an Odoo developer with multiple implementations of recent Odoo versions, including Odoo 18.
• Proficient in Python, Odoo ORM, PostgreSQL, XML views, and module development; knowledge of OWL and front-end customization is a plus.
• Familiar with Odoo accounting and invoicing modules, including multi-company and multi-currency setups.
• Real integration experience with REST APIs, XML-RPC/JSON-RPC, webhooks, and ETL processes.
• Experience with Git, automated testing, CI/CD, and containerized environments.
• Understanding of accounting principles to communicate effectively with finance teams.
• A functional sparring partner who questions design choices and their implications.
• Experience in high-volume transactional environments such as e-mobility, energy, or SaaS is advantageous.
• Ability to work autonomously and document work in a structured manner.
• Fluent in English; proficiency in French or Dutch is a plus.

Why This Assignment?

• Opportunity to build new financial flows in a greenfield CPMS integration.
• Engage in technically substantial work with high transaction volumes and strict auditability requirements.
• Direct access to business stakeholders, supported by a knowledgeable Business Analyst and Finance team.
• Work in a fast-moving market at the intersection of mobility, energy, and technology.
• Make a concrete impact by building systems that invoice thousands of customers monthly.

Practical Information:

• Type of engagement: freelance/consultancy assignment.
• Workload: 5 days per week.
• Location: Client site with hybrid working; on-site presence required during key phases.
• Daily rate: to be proposed based on experience.
• Selection process: CV screening, interview, and technical deep dive.

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today at Keystone Solutions Career Portal.

Duration: As soon as possible - 30/12/2026 2 months • (full time)

Skills required:

• API & Systems Integration - Level: Intermediate - Most recent: This year
• Financial & Accounting Systems - Level: Intermediate - Most recent: This year
• Financial Reconciliation & Payment Processing - Level: Intermediate - Most recent: This year
• Odoo Development - Level: Intermediate - Most recent: This year
• Python & PostgreSQL - Level: Intermediate - Most recent: This year

Language requirements:

Dutch or French

Level Full professional proficiency

English

Level Full professional proficiency