Who we are and What we do:

We are a blockchain product company focused on building new businesses, trying to revolutionize the related industries using the benefits of Distributed Ledger Technologies (DLT) and Blockchain.

We see blockchain, smart contracts as a meta-technology with a huge potential and real applicability. Based on our experience in Banking, Regulation, Product management and Software development we will try to shape the future.

To be able to reach our goals, building the right team is the base for success. A good venture will be the consequence of having the best performing team. We are creating an environment where you can get your maximum potential, where people matter and where transparency is on the DNA.

We are searching for good people that first of all will fit our culture and mindset, and second, will add their experience and expertise to our team.

´The future is here. It's just not evenly distributed yet´, William Gibson.

What we offer:

- Great environment.
- Innovation and building new business with your own hands.
- Flat organization and short decision paths.
- Versátil working hours.
- Remote working (Based on the team needs).
- Remote Work Allowance.
- We are challenge oriented.
- Social benefits: Flexible Payment Plan, medical insurance and others.
- 25 vacation days.
- Your birthday as a day off.
- 2 free days for conference/courses + Budget.

What we are looking for: We’re looking for a Golang Developer to join a high-performing technical team working on licensable B2B products. You’ll be involved in the design, development, and evolution of solutions built on modern, scalable, and maintainable architectures.

Blockchain experience is a plus, but not a requirement.

You’ll have real impact: taking part in technical decision-making, shaping architecture, and setting engineering best practices.

- 5+ years of experience in backend development
- Strong,



hands-on experience with Golang in production
- Solid knowledge of:

Hexagonal Architecture Domain-Driven Design (DDD)

Event-driven systems

- Experience designing APIs (REST, gRPC)
- Strong testing practices (unit and integration)
- Experience with distributed systems
- Knowledge of relational and/or NoSQL databases
- Experience with cloud environments and containers (Docker, Kubernetes is a plus)
- Good backend security and performance practices

⭐ Nice to have
- Experience with blockchain (Ethereum, Hedera, Solana, etc.)
- Smart contracts or blockchain integration experience
- Background in SaaS / licensable B2B products
- Messaging & streaming platforms (Kafka, RabbitMQ, NATS, etc.)
- CI/CD knowledge
- High-availability environments experience

What you’ll do

- Design, develop, and maintain backend services using Golang
- Apply Hexagonal Architecture (Ports & Adapters) and Domain-Driven Design (DDD)
- Design and implement event-driven architectures
- Build scalable and resilient solutions for licensable B2B software
- Define and promote quality standards, testing, and observability
- Review code and mentor mid-level and junior developers
- Collaborate closely with Product, Architecture, and DevOps teams
- Continuously improve the tech stack and development processes

What we offer

- Challenging projects and a great environment.
- Innovation and building new business with your own hands.
- Flat organization and short decision paths.
- Flexible working hours.
- Remote working (Based on the team needs).
- Remote Work Allowance.
- We are challenge oriented.
- Social benefits: Flexible Payment Plan, medical insurance and others.
- 25 vacation days.
- 2 free days for conference/courses + Budget.

We are an equal opportunity employer and value diversity in our company. We do not discriminate on the basis of race, religio, colour, national origin, gender, sexual orientation, age, marital status or disability.

📌 Senior Golang Developer (España)
🏢 Iobuilders
📍 España