Tech Stack
Job Description, Responsibilities & Requirements
About the Position
Staff Software Engineer
Portugal, Remote
About the Role
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.
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.
Responsibilities
- 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 the development of a healthy and effective engineering culture.
Technologies
You'll work with a diversity of technologies, including:
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Languages
- TypeScript/JavaScript, Java, .Net, Python, Golang, Rust, Ruby on Rails, Kotlin, Swift
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Frameworks
- Next.js, React, Angular, Spring, Expo, FastAPI, Django, SwiftUI
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Cloud Service Providers
- Google Cloud Platform, Amazon Web Services, Microsoft Azure
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Cloud Services
- Compute Engine, AWS Amplify, Fargate, Cloud Run, Apache Kafka, SQS, GCP CMS, S3, GCS
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Technologies
- AI/ML, LLMs, Crypto, SPA, Mobile apps, Architecture redesign, Google Gemini, OpenAI ChatGPT, Vertex AI, Anthropic Claude, Huggingface
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Databases
- Firestore(Firebase), PostgreSQL, MariaDB, BigQuery, Supabase, Redis, Memcache
Requirements
- 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, algorithms, and effective development practices.
We Offer
- Remote-first, flexible work with a budget to set up a workspace 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.
About the Company
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.