Tria - Senior Backend Engineer - Web3.js/Node.js/Python

Tria :

Crypto's first real consumer product - a mobile-first app for spending, trading, and growing your money on-chain, without the jargon or the friction.

We're still in private beta. We've already done :

- $100M+ in card spends

- $1B+ in futures traded

- $50M+ in assets under management

That's the traction before we've opened the doors. Now we're scaling the product to a much bigger audience - and we need a Senior Backend Developer to help us scale for the next phase.

The team is lean and product focused with 2x exits, Managed multiple $150M portcos, founded Polygon Accelerator with work-ex from GSK, Astrazeneca, Intel, Binance, OpenSea, OKX, Nethermind and more. Alumni of INSEAD, Upenn, IIT, IIM and BITS. Tria has raised more than $10 Mn from top VCs and Angels globally.

The team is global, with presence across India, UAE, UK, US, and Singapore.

Learn More : www.tria.so

Role & responsibilities :

Tria is building the next generation of global fintech + web3 infrastructure. We are looking for a Senior Backend Engineer who has already built and scaled high-performance backend systems serving 1M+ users (preferably in the fintech). Your expertise will help us design systems that are secure, reliable, and lightning-fast, powering financial services for millions worldwide.

You'll be joining at a stage where every design choice matters and your work will directly shape the backbone of financial services for millions of users worldwide. If you thrive in high-ownership environments, enjoy solving hard scaling problems, and want to leave your mark on the future of global financial infrastructure, we want you on the team.

What You'll Do :

- Architect, build, and scale backend services in Node.js and Python, optimized for millions of users and high-volume financial transactions.

- Design and implement secure APIs for payments, wallets, and user financial flows balancing speed with compliance.

- Lead performance tuning across latency, throughput, and cost, ensuring systems hold up under global load.

- Set up world-class observability : logging, tracing, metrics, and alerting for 24/7 reliability.

- Drive security and compliance readiness (auth, encryption, PCI/KYC/AML) from the ground up.

- Collaborate with product and infra teams to design scalable solutions, while mentoring engineers and raising the bar for code quality and system design.

- Proven track record of scaling backend systems to 1M+ users (fintech, payments, banking, or similarly demanding industries strongly preferred).

- Experience with Trading and Financial Ramping (On-ramping/onboarding, Off-ramping/off-boarding) products preferred.

- Deep expertise in Node.js and/or Python, with the ability to work across multiple backend languages.

Preferred candidate profile :

What We're Looking For :

- 5+ years of building and working with distributed systems, event-driven architectures, caching, and high-throughput databases (PostgreSQL/MySQL, with exposure to NoSQL as a plus).

- Experience building low-latency APIs and transaction systems where every millisecond counts.

- Strong background in security best practices, including fraud prevention, encryption, and authentication.

- Hands-on experience with AWS (ECS, Lambda, RDS, SQS, etc.), Infrastructure as Code (Terraform/CloudFormation), and modern DevOps (CI/CD, Docker, scaling infra).

(ref:hirist.tech)