Senior Backend Engineer

🕒 June 25

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LanguageWire

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2000

🤖 Artificial Intelligence

🤝 B2B

🏢 Enterprise

Artificial Intelligence • B2B • Enterprise

LanguageWire is a company offering a comprehensive language management ecosystem. It enables businesses to engage and communicate globally using bespoke AI technology combined with human expertise. Founded in 2000, LanguageWire simplifies multilingual content creation and management through advanced tools and services, including translation, copywriting, subtitling, and more. The company focuses on automating workflows and ensuring secure infrastructure for its clients' international communication needs.

📋 Description

• As a Senior Backend Stack Engineer in the Core Platform Team, you’ll be a principal owner of the TMS (Translation Management System) Platform and connected services. • Driving the architecture, reliability, and evolution of services covering translation workflow orchestration, vendor management, customer management, and integrations with our internal services. • Setting the technical direction for these services: defining how they scale, and maintain the quality bar expected of infrastructure-grade software. • Own and evolve foundational services: Take end-to-end ownership of platform service driving their architecture, reliability, and roadmap. • Lead backend architecture decisions: Author architecture decision records, define service boundaries, and ensure services are designed for scalability, resilience, and long-term maintainability. • Design and enforce API contracts: Define and maintain clean, versioned, well-documented REST APIs consumed by internal teams and, increasingly, by AI agents. • Drive technical quality: Own non-functional requirements — performance, observability, security, and availability — across the services you lead. • Collaborate cross-functionally: Work with product managers and domain experts across the business to shape the platform roadmap and translate real needs into sound technical solutions.

🎯 Requirements

• 5+ years of backend engineering experience in production environments, with deep expertise in C#, .NET Core / .NET 8+, ASP.NET Web API, and microservices architecture. • Proven track record of owning and evolving production services: schema migrations, API versioning, backward compatibility, and long-lived service maintenance. • Strong experience with distributed systems concepts: event-driven architecture, message queues (Azure Service Bus, RabbitMQ), sagas, idempotency, and eventual consistency. • Strong experience with AI developer tools (Using and building custom agents, skills, instructions) • Deep proficiency with relational databases (MSSQL and/or PostgreSQL): complex query design, schema design, indexing strategies, and performance tuning. • Demonstrated experience making and documenting architectural decisions (ADRs, system design, trade-off analysis) with the ability to defend and adapt your choices. • Hands-on DevOps experience: CI/CD pipelines, Docker, Kubernetes, Azure — with the mindset that owning deployment and operations is part of the engineer’s job. • Experience designing robust, versioned REST APIs consumed by multiple teams, including security considerations (OAuth 2.0, API key management, rate limiting). • Some frontend exposure (Vue.js and/or TypeScript) — enough to contribute when needed, but the primary focus here is backend and platform. • A track record of mentoring and uplifting junior engineers — through code reviews, design sessions, and raising the quality bar organically. • Strong communication skills and the ability to articulate technical decisions to both engineers and non-technical stakeholders. English fluency required. • Agile, collaborative, and opinionated in a constructive way — you push back when needed and bring others along.

🏖️ Benefits

• Flat hierarchies, real responsibility and autonomy, direct feedback, and room to stand up for your ideas. • Internal development opportunities, ongoing support from your People Partner, and an inclusive and fun company culture. • International company with over 300 employees. Offices in Copenhagen, Aarhus, Stockholm, Varberg, London, Leuven, Lille, Paris, Munich, Hamburg, Sophia Antipolis, Atlanta, Finland, and Valencia. • Full-time FlexiWire@home option for remote work. You’re always welcome in the office to collaborate and connect. • We take care of our people: Friday Bars, Summer and Christmas parties, and a genuine social culture. • Excellent location in modern offices in Valencia city center, with a rooftop terrace overlooking Town Hall Square. • Private health insurance. • International environment — more than 20 nationalities in the company. • Dog-friendly office, big kitchen with organic fruits, coffee, and snacks, plus a game room (foosball, darts, board games) and bike and car parking.