Technical Client Services Officer (JavaScript) - AC524 - Luxembourg

About our client Our client is a growing international fintech company providing a market-leading SaaS platform to major institutions in the investment funds industry. Based in Luxembourg, they support clients across multiple jurisdictions with complex fund accounting, reporting, and investor servicing operations. The business is stable, growing, and known for the long-term tenure of its teams. What you will be doing You will sit at the intersection of hands-on JavaScript development, client implementation, and team technical leadership. Your core responsibilities will include: Develop and maintain applications in a proprietary JavaScript framework used to build custom reporting solutions for fund administration clients Bring architectural thinking to the codebase, define coding standards, review code and help structure things so they stay maintainable Mentor and support less technical colleagues, guiding them towards better development practices Work with clients and product teams to translate business needs into platform configurations, report templates and integrations Own client issues end-to-end post-implementation: root-cause analysis, fixes and SLA management Engage in ongoing training on platform capabilities and evolving fund regulations Your profile Must-have Solid, hands-on JavaScript proficiency, you write JS daily and can demonstrate it in a technical assessment Strong sense of application architecture and code structure 5+ years in a technical role; client-facing background (SaaS implementation, technical consultant, fintech dev/support) is a strong plus Structured, methodical mindset with strong attention to detail Easygoing team player who integrates naturally into a close-knit, experienced team Fluent English (essential); French (strong plus); German (highly valued, genuine differentiator) Nice-to-have Experience mentoring junior or non-technical colleagues Knowledge of fund administration, financial reporting, or investment fund operations Familiarity with web technologies, document generation, and templating tools No prior knowledge of the investment funds industry is required; it will be fully taught on the job. What's on offer Permanent contract (CDI), Luxembourg Competitive salary package: bonus, lunch vouchers, pension scheme, 28 days leave Ongoing technical and product training A stable, international and collaborative environment with a long-tenured team Greenfield is a leading Luxembourg-based Recruitment and Executive Search Consultancy and has been selected exclusively to fulfill this mandate. If you are interested in this position or would like to discuss other roles that we are currently recruiting for, please forward your CV in English to alan(at)greenfield.lu Greenfield Luxembourg is an equal opportunities employer and welcomes applicants from all sectors of the Community. Due to the nature of our client engagements, we are however unable to support applicants that are outside of our c...

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