Senior Backend developer & blockchain infrastructure

Colossus Digital; Roma; In loco; EUR 40.000 - 70.000; Tempo pieno

Descrizione del lavoro

A blockchain technology provider in Rome is seeking a Middle/Senior Backend Developer to lead backend system architecture and security. The ideal candidate will have strong experience with Node.js, microservices, and cloud platforms, along with the ability to mentor and drive performance in a dynamic team environment. This full-time position offers the chance to work with top blockchain experts and make an impact in Web3 infrastructure.

Competenze

• Strong experience with Node.js, preferably with NestJS.
• Expertise in microservices and cloud platforms.
• Solid knowledge of MongoDB and API design.

Mansioni

• Lead and scale backend systems.
• Own architecture and drive performance.
• Ensure security across microservices and AKS infrastructure.

Conoscenze

Node.js

microservices

cloud platforms (GCP/AWS)

Docker

Kubernetes

MongoDB

API design

backend security (OAuth2, JWT)

Testing Frameworks (such as Jest)

Descrizione del lavoro

1 week ago Be among the first 25 applicants

Colossus Digital is a technical provider in blockchain, helping institutions like banks, funds, and custodians participate in blockchain ecosystems, focusing on staking. Colossus digital created the Institutional Hub, a B2B Marketplace that enables secure, compliant staking directly from custody providers, such as Ledger Enterprise, Fireblocks or Dfns, unlocking asset productivity across multiple blockchains.

We’re looking for a Middle/Senior Backend Developer to lead and scale our backend systems. You’ll own architecture, drive performance, and ensure security across our microservices and AKS infrastructure.

What you’ll bring

• Strong experience with Node.js (NestJS preferred)
• Expertise in microservices, cloud platforms (GCP/AWS), and Docker/Kubernetes
• Solid knowledge of MongoDB, API design, and backend security (OAuth2, JWT)
• Leadership in architecture and mentoring
• Testing Frameworks (such as Jest)
• Secure, scalable microservices architecture
• Work with top-tier blockchain experts
• Shape the future of Web3 infrastructure
• Grow in a fast-paced, innovative environment
• International team, cutting-edge tech, real impact

How to apply

Attached your CV, GitHub/portfolio here or send it to [e-mail] [Subject: Senior Backend Developer – (Your Name)]

Seniority level

Mid‑Senior level

Employment type

Full‑time

Job function

Engineering and Information Technology

Industries

Strategic Management Services

Referrals increase your chances of interviewing at Colossus Digital by 2x

Get notified about new Senior Developer jobs in Rome, Latium, Italy.

Software Developer/Engineer – Graduate Development Program

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.