Principal Software Engineer – Ai-Native Architecture

Alicante, Spain (Hybrid 2–3 days in office required)

Salary:
€60,368 – €98,099 gross per yearContext & ImpactWe're looking for aPrincipal Software Engineerto operate at the intersection of deep technical expertise and cross-functional leadership.
This is not a people management role.
It's for someone who has spent 10+ years building real intuition for how complex systems work — and who can now translate that into architectural direction, fast decisions, and meaningful influence across the organization.
You'll be a reference point for the team: someone engineers come to when they're stuck, someone who can engage with product and infrastructure discussions without needing to be briefed from scratch, and someone who is genuinely excited about where AI is taking the craft.
AI FluencyAt Lansweeper, we are building anAI-native engineering culture.
We expect all engineers to actively use AI tools to enhance productivity and quality across the software development lifecycle, includingcoding, testing, documentation, and system design.
Candidates should be comfortable working with AI-assisted workflows and continuously evolving their approach as tools and practices advance.
The Main Challenges You'll Face AreDriving architectural clarity across a distributed systems platform built in Go and RustBalancing speed, quality, and long?term maintainability in an AI?augmented development environmentInfluencing technical direction across teams without formal authorityTeam InfoYou will join an enthusiastic team of 40 engineers based in Spain (global engineering team is 120 people).

What You'll Do
Set architectural direction for key areas of the Lansweeper platformAct as a technical reference across engineering — and beyond, when neededEngage with product, infrastructure, and business stakeholders to shape what gets built and howDrive adoption of AI?native ways of working across the teamMentor senior engineers and raise the technical bar across the organizationIdentify and close gaps before they become problemsCollaborate with engineers across Alicante and internationallyHard SkillsWhat we're looking for (Key Requirements)10+ years of experience in software engineering, with a clear trajectory toward architecture and technical leadershipStrong experience building distributed systems in Go and/or Rust in production environmentsPrimary languages: Go and/or Rust (required)Deep understanding of data modeling, APIs, and service?oriented architecturesExperience designing reliable and scalable systems in productionHands?on expertise running services on Kubernetes with GitHub?based CI/CDStrong experience with PostgreSQL and MongoDBPractical experience using AI tools for coding, refactoring, testing, and documentationDemonstrated experience influencing technical direction across teamsSoft SkillsHave opinions, communicate them clearly, and build alignment without a formal mandateCurious, self?directed, and passionate about building things inside and outside of workLearn new tools and technologies quicklyThink in systems rather than isolated componentsPrefer simple solutions over unnecessary complexityTake ownership of engineering quality and long?term maintainabilityCombine human judgment with AI?driven acceleration to deliver high?quality softwareOperate with a high degree of autonomy, especially when requirements are vague or evolvingAI Specific SkillsLansweeper is an AI?native company.
In this role, you are expected to actively use AI?assisted development tools such as Claude, code assistants, and agent?based workflows as part of your daily engineering practice.
You should be comfortable guiding AI tools, validating outputs, and integrating AI into engineering workflows to improve speed and quality while maintaining production?grade standards.
Our OfferSalary: €60,368 – €98,099 gross per yearCareer growth and learning opportunities within a fast?scaling SaaS companyFlexibility in

working hours
and hybrid work optionsCompany events and international collaborationPay TransparencyAt Lansweeper, every role is assigned to a level defined by three things: the expertise it requires, the complexity it involves, and the scope of impact it carries.
Each level maps to a salary band based on salary benchmarks from the Software/SaaS industry of your country, so your pay reflects what the market pays for comparable roles.
The gross salary range for this role is €60,368 – €98,099 (EUR) (Spain) (based on full?time employment).
Where you land within that range depends on the expertise you bring, the complexity you have navigated, the scope of impact you have owned, and your track record of delivering results in comparable roles — the same criteria applied consistently to every candidate.
We welcome applicants of all backgrounds, regardless of gender, religion, ethnic origin, age, sexual orientation, or disabilityHow AI Is Used During Hiring ProcessWe use AI to support and not replace during the hiring process.
HR decision