Senior Product Engineer

Location : Barcelona (WeWork Glories)

Team : Engineering

Type : Full-time

About Acai Travel

Acai Travel is revolutionizing the travel industry with cutting-edge AI agentic solutions for leading Airlines, OTAs, and TMCs. We're rebuilding travel with agentic software.

Our founders previously sold an AI company to American Express GBT—value for your equity is guaranteed! We've grown from 3 clients ($15K MRR) to 10 clients ($80K MRR) at 30% monthly growth.

Our culture is grounded in Zen and Tibetan Buddhism principles, fostering ego-less problem-solving and emotional stillness. We consider the company a playground to become better individuals—you will be transformed into a more empowered, joyful person.

About the Role

We're looking for an exceptional Senior Product Engineer who lives at the intersection of engineering excellence and product obsession. You'll build backend systems behind our AI automation platform while being deeply involved in product decisions, customer conversations, and the "why" behind every feature.

This isn't just about writing code—you'll challenge product assumptions, work directly with customers, and drive features from conception to measurable business results.

What Makes You Exceptional

Extreme Ownership : You challenge specs, suggest alternatives, and drive ideas to completion even when others need convincing.

Product Obsession : You ask "why?" relentlessly and dive into user behavior, business metrics, and customer feedback to understand real problems.

Optimistic Collaboration : You make everyone more excited about building and help ideas get off the ground rather than die in committees.

Authentic Communication : You build great relationships with non-engineers and learn how other disciplines work.

Craft Excellence : Joy comes from the craft itself. You love building products and continuously validate that your work creates real user value.

What You'll Do

Build Product-Driven Systems

Design scalable Go services (gRPC, MongoDB) with product impact in mind

Work across AI workflows, automation logic, and integrations

Make architecture decisions based on customer needs

Own Features End-to-End

Partner with customers to understand the "why" behind requirements

Suggest product / engineering tradeoffs that maximize user value

Ship with early validation cycles and measure real-world impact

Drive Product Conversations

Bring data-backed product suggestions and challenge existing approaches

Map edge cases pragmatically using "minimum lovable product" mindset

Collaborate directly with customers to shape working solutions

What We're Looking For

Technical Foundation

Backend engineering experience with distributed systems and cloud platforms

Go (or similar systems languages), gRPC, MongoDB, Terraform experience

Curiosity about AI and automation solving real business problems

Product-Minded Traits

Deep interest in business models, user behavior, and success metrics

Track record of challenging specifications and bringing product ideas

Experience working with product managers, designers, and customer teams

Exceptional Qualities

Self-directed with a "yes, and" mentality toward new ideas

Authentic communicator who builds people and ideas up

Intrinsically motivated by building great products

Optimistic problem-solver who generates enthusiasm

Our Stack

AI-driven products on LLMs, Go, gRPC, MongoDB, Terraform, Auth0, TypeScript / Next.js, Datadog

Why Join Acai

Proven Growth : 30% monthly growth, founders sold previous company to AmEx GBT

Dual Impact : Drive technical excellence and customer relationships

Personal Growth : Zen / Buddhist culture focused on self-awareness and empowerment

Meaningful Equity : Significant ownership in category-defining startup

Epic Perks : Barcelona base, world-class off-sites, strategic customer travel

Location & Benefits

Barcelona, Spain - In-person at WeWork Glories. Travel for strategic customers worldwide.

Competitive salary + significant equity, private health insurance, office perks, epic off-sites.

We welcome exceptional engineers from all backgrounds. You don't need fancy companies on your resume—we love builders who've held together failing startups. What matters is your obsession with the craft and ability to make everyone more excited about building great products.

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