Staff Backend Software Engineer

Jobgether; España; Remote; EUR 120,000 - 180,000; Full time

Benefits offered by this job

Flexible remote work

Home-office stipend

MacBook Pro

Unlimited paid time off

Country-specific benefits

Inclusive workplace

Job summary

Jobgether in Spain seeks a Staff Backend Software Engineer for a partner company. You will build a distributed transaction platform supporting secure cryptocurrency transfers between financial institutions, fintechs, and exchanges.

Core work centers on Go and PostgreSQL, with cloud engineering and AI-assisted development shaping architecture and production practices. You will mentor engineers, own critical production systems, and collaborate with product, compliance, and customer-facing teams in

Qualifications

• 8+ years of backend experience delivering end-to-end projects.
• Expertise in distributed systems design and failure handling.
• Go proficiency or strong production experience with a statically typed backend language.
• Deep PostgreSQL knowledge including multi-tenant data management.
• Cloud engineering with AWS or GCP, IAM and managed databases.
• Experience with AI coding agents in development workflows.
• Strong written communication for remote collaboration.
• Security fundamentals for data encryption and access control.
• Knowledge of crypto, blockchain concepts, or related regulatory domains is a plus.

Responsibilities

• Design, develop, and maintain core components of a distributed transaction platform.
• Ensure data correctness, tenant isolation, and auditability across systems.
• Improve scalability and maintain predictable latency as volumes grow.
• Produce technical design docs and review architecture proposals.
• Integrate AI coding agents into development workflows and ensure safe production code.
• Collaborate with product/compliance/customer teams to translate requirements into software.
• Own production systems including tracing, alerts, and incident response.
• Mentor engineers and contribute to engineering standards.
• Participate in on-call rotations to support platform reliability.

Skills

Go

Distributed systems

PostgreSQL

Cloud (AWS/GCP)

AI-assisted development

Security fundamentals

Technical communication

Tools

Terraform

Node.js

TypeScript

Observability tooling

Job description

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Staff Backend Software Engineer based in Spain.

As a Staff Backend Software Engineer, you’ll help build and evolve a mission-critical transaction platform that enables secure cryptocurrency transfers between financial institutions, fintechs, and exchanges worldwide. You’ll tackle complex distributed systems challenges where data integrity, tenant isolation, reliability, and auditability are essential in a regulated environment. Working primarily with Go and PostgreSQL, you’ll shape core architectural decisions, improve platform scalability, and ensure predictable performance as transaction volumes grow. You’ll also help establish effective engineering practices for AI-assisted development, ensuring generated code meets rigorous production standards. In this remote-first, collaborative environment, you’ll partner with product, compliance, and customer-facing teams while mentoring engineers and taking ownership of the systems you deliver.

Accountabilities

• Design, develop, and maintain core components of a distributed transaction platform.
• Build resilient systems that preserve data correctness, tenant isolation, and auditability, including when failures occur.
• Improve scalability as transaction volumes and the number of institutions per node increase, maintaining predictable latency and database performance.
• Produce clear technical design documents and provide constructive, detailed reviews of architecture proposals and code.
• Integrate AI coding agents into daily development workflows and improve specifications, context, and review practices to ensure generated code is safe for production.
• Collaborate with product, compliance, and customer-facing teams to translate regulatory obligations and customer needs into reliable software.
• Take end-to-end ownership of production systems, including tracing, alerting, incident response, and post-incident follow-ups.
• Mentor other engineers, share technical expertise, and contribute to the team's engineering standards.
• Participate in the on-call rotation to support platform reliability and operational continuity.

Requirements

• Typically 8+ years of backend engineering experience, with a track record of delivering complex technical projects end to end and helping other engineers grow.
• Strong distributed systems design expertise, including asynchronous processing, failure handling, and systems where correctness takes priority over feature delivery.
• Strong Go experience, or substantial production experience with another statically typed backend language such as Java, Kotlin, Rust, or C#, with the ability and motivation to start shipping Go code within the first few weeks.
• Deep PostgreSQL knowledge, including schema design, query planning, locking, transaction isolation levels, live database migrations, and multi-tenant data management.
• Practical cloud engineering experience with AWS or GCP, including IAM, networking, managed databases, queues, and storage. Ability to read and modify Terraform and troubleshoot production issues using traces and logs.
• Daily experience using AI coding agents such as Claude Code or Cursor, including writing specifications, providing context, decomposing tasks, critically reviewing generated code, and understanding where these tools can fail.
• Strong written communication skills, with the ability to explain technical decisions clearly and concisely in a remote environment that relies on documentation and asynchronous collaboration.
• Solid security fundamentals for handling sensitive data, including encryption in transit and at rest, key management, data minimization, and least-privilege access.
• Familiarity with any of the following is an advantage: applied cryptography, decentralized identity protocols such as DIDs, verifiable credentials and DIDComm, regulated finance, payments, compliance frameworks such as the Travel Rule, AML, ISO 20022, SOC 2 or ISO 27001 controls, crypto and blockchain concepts, Node.js, TypeScript, queue and workflow systems, or modern observability tooling.
• Blockchain experience is not required. Candidates from a broad range of backgrounds are encouraged to apply, including those returning to work after a career break or progressing along a different career path.

Benefits

• Flexible remote work: Work remotely from anywhere.
• Home-office stipend: $1,000 to support your home-working setup, available for use within your first year of employment.
• MacBook Pro: Choose a model that suits your needs in coordination with your manager.
• Unlimited paid time off: Take the time you need to rest and recharge.
• Country-specific benefits: Statutory benefits and contributions managed through an employer-of-record arrangement.
• Inclusive workplace: A commitment to equal employment opportunity and a working environment that values diversity and prohibits discrimination based on legally protected characteristics.