Senior Software Engineer

At Lokalise, we make it easy and profitable for businesses to expand into new markets. Our AI-powered localization platform helps companies manage both software and marketing content from a single, unified environment — ensuring every team speaks with one voice across every language and channel.

By automating workflows, integrating with over 60 tools, and centralising translation memory and terminology, Lokalise enables product, engineering, and marketing teams to collaborate without friction and launch globally up to 10× faster and at 80% lower cost.

Trusted by thousands of businesses across more than 100 countries, Lokalise empowers over 25 million people worldwide to use digital services in their native languages. Backed by a customer-loved support team, our platform fits seamlessly into your design, development, and content workflows, helping you scale with consistency and control.

While our company operates exclusively on a remote basis, you must reside and have the legal right to work in one of the following countries: the United Kingdom, Latvia, or Spain.

We're looking for a Senior Software Engineer (Backend) to join our Integrations domain. Our mission is to build the industry's most robust and scalable integrations platform, enabling seamless data flow between Lokalise and the hundreds of tools our customers rely on every day—from code repositories and design tools to content management systems.

This isn't just about building integrations; it's about architecting a platform that makes our customers' workflows effortless and our developers' lives easier. As a senior member of this team, you won't just be an individual contributor; you will be a standard-setter and a force multiplier. You will lead by example, elevating our craft, shaping our technical direction, and helping us build a world-class engineering environment.

• Architect and Own: Lead the design, development, and long-term ownership of our core integrations platform and services, making pragmatic trade-offs between velocity and long-term maintainability.
• Think Holistically: Go beyond the code to deeply understand customer workflows and business impact. Ground every technical decision in a clear "why" that connects your work to the value we deliver.
• Build the System: Champion and implement practices that improve our entire development lifecycle. You'll help us build frictionless, automated pathways to production and use data (like DORA metrics) to measurably improve our delivery performance.
• Elevate the Team: Act as a force multiplier. Through thoughtful code reviews, mentorship, and knowledge sharing, you will actively raise the skill level of the engineers around you. You'll contribute to a culture where we are all proud of how we build.
• Lead in AI-Powered Development: Pioneer and evangelize the use of AI development tools within the team. You won’t just use these tools; you will actively discover and share workflows that accelerate our entire organization.

• Deep Technical Craft: 7+ years of experience building and running complex backend systems. You have solid experience with Node.js and PHP, and are comfortable owning and evolving systems across a mixed stack of modern services and a PHP monolith.
• Integrations Domain Expertise: A proven track record of working in the integrations space. You understand the patterns (e.g., webhooks, polling, message queues, event-driven architectures), the challenges of API versioning, and the principles of building a scalable, multi-tenant integrations platform.
• Systems Thinking: Strong understanding of modern backend building blocks: API best practices; message queues (RabbitMQ, SNS/SQS or similar); relational data stores (PostgreSQL or similar); and cloud services (AWS or similar).
• High-Impact Judgment & Decision Quality: You see decision-making as a deliberate engineering practice, not an afterthought. You have a demonstrated history of making sound technical judgments by driving a process of research, prototyping (PoCs), and fostering clear, written debate via technical design documents (like RFCs or ADRs). You prioritize getting it right over being right.
• Pragmatism over Dogma: You believe great engineering is about solving problems, and you see languages and frameworks as tools to be selected, not identities to be defended. You have a demonstrated ability to quickly learn and apply new technologies, and you're comfortable context-switching between different parts of a complex system. From our PHP monolith to our modern Node.js microservices, always focusing on the right tool for the job.
• A Commitment to Quality: A belief that testing, observability, and operational excellence are not afterthoughts but core to the engineering craft.
• AI as a Core Competency: Demonstrated mastery of AI-powered development tools (e.g., GitHub Copilot, Cursor, Claude Code, …) and a passion for coaching others in their use.
• Leadership and Influence: Excellent problem‑solving, analytical, and communication skills. You can articulate complex technical ideas with clarity and inspire others to adopt higher standards.

• Experience building developer-facing APIs or SDKs.
• Experience contributing to or maintaining open-source projects.
• Familiarity with the localization domain and its unique technical challenges.