Staff Software Engineer
WFA Digital Insight
Fluxon’s Staff Software Engineer role sits at the intersection of high‑impact product delivery and client collaboration. Unlike many senior engineering jobs that stay behind the scenes, this position expects you to own the entire lifecycle—from shaping requirements with product and design partners to steering implementations that reach end users. The team’s remote‑first culture, built by ex‑Google engineers, means you’ll be trusted to make technical decisions without micromanagement while still syncing closely with global clients like Google and OpenAI. Expect daily exposure to a wide tech stack, from TypeScript and Rust to cloud services on GCP, AWS, and Azure, and a mandate to embed AI where it adds genuine value. Candidates who thrive in fast‑moving, AI‑centric environments and enjoy mentoring engineering culture will find this role uniquely rewarding.
Job Description
Who we are
At Fluxon, we believe that how you build matters as much as what you build. We help businesses navigate their most important technology decisions with confidence, and take responsibility for seeing them through. Founded by ex-Googlers and startup veterans, we’re proud to partner with teams behind some of the most ambitious products, including Google, OpenAI, Anthropic, Walmart and Stripe.
Our work spans strategy, design, and engineering — often in complex, AI-driven environments — where clarity, speed and quality are the standard. We use AI intentionally, applying it only where it adds real value and expands what’s possible. Care shapes everything we do.
Inside Fluxon, you’ll find a global, remote-first team of experienced builders, who are curious, kind and serious about their craft. We’re building a place where people can take ownership, solve problems that matter and do work they’re proud to stand behind. If you want to do your best work alongside people who care as much as you do, you’ll feel at home here.
Note: This position is fully remote and open to candidates based anywhere in Portugal.
About the role
As a Staff Software Engineer at Fluxon, you'll drive the end-to-end delivery of products to market while learning, contributing, and growing in partnership with our leadership team
You'll be responsible for:
- Guiding project delivery all the way to the user, leading projects, building and iterating in a dynamic environment
- Partnering directly with clients to understand their needs, and achieve business goals
- Defining product requirements, identifying appropriate system designs and planning development in partnership with our Product and Design teams
- Supporting development of a healthy and effective engineering culture
You'll work with a diversity of technologies, including:
- Languages
- TypeScript/JavaScript, Java, .Net, Python, Golang, Rust, Ruby on Rails, Kotlin, Swift
- Frameworks
- Next.js, React, Angular, Spring, Expo, FastAPI, Django, SwiftUI
- Cloud Service Providers
- Google Cloud Platform, Amazon Web Services, Microsoft Azure
- Cloud Services
- Compute Engine, AWS Amplify, Fargate, Cloud Run
- Apache Kafka, SQS, GCP CMS
- S3, GCS
- Technologies
- AI/ML, LLMs, Crypto, SPA, Mobile apps, Architecture redesign
- Google Gemini, OpenAI ChatGPT, Vertex AI, Anthropic Claude, Huggingface
- Databases
- Firestore(Firebase), PostgreSQL, MariaDB, BigQuery, Supabase
- Redis, Memcache
Qualifications
- 7+ years of industry experience in software development
- Experience leading development through the full product lifecycle, including CI/CD, testing, release management, deployment, monitoring and incident response
- Fluent in the design and implementation of scalable system architectures, data structures and algorithms, and effective development practices
What we offer
- Remote-first, flexible work with a budget to set up a work space that works for you
- Localized healthcare coverage to support you and your family’s wellbeing
- Flexible paid time off with a minimum of 3 weeks per year (plus holidays)
- "No internal meetings" Fridays, so you can focus on deep, uninterrupted work
- A professional growth budget for learning that matters to you – whether it’s developing your technical skills or learning a new language
- A monthly wellness allowance to support your physical and mental health
- Annual company offsites, where we gather in person to build meaningful connections
- A competitive salary that reflects your expertise, impact and experience
- Profit-sharing, so you can benefit directly from the value we build together
- A paid sabbatical program, designed for rest, renewal and fresh perspective
How to Stand Out
- Highlight concrete examples of end‑to‑end product delivery, especially where you interfaced directly with clients.
- Showcase any experience with the specific languages or frameworks listed; a short code sample or GitHub repo can differentiate you.
- Prepare to discuss how you evaluate AI/ML models for real‑world impact, citing a project where you applied them responsibly.
- Emphasize remote‑work discipline: describe your communication tools, time‑zone coordination, and self‑management strategies.
- During interviews, ask about Fluxon’s engineering culture and how mentorship is structured; it signals genuine interest.
- If compensation isn’t disclosed, research typical equity and salary ranges for senior staff engineers in remote EU markets to negotiate confidently.
- Watch for vague promises about “unlimited PTO” without clear policy; clarify the actual time‑off expectations early on.
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