Job VC

VANTREXIS
is an engineering agency that builds dedicated remote teams for high-growth SaaS companies in the US, UK, and EU. We are looking for a Senior Backend Engineer to develop new features in a complex, integration-heavy product environment.
The Role
You will join a team where AI-augmented development (
Cursor, Claude, Copilot
) is a daily standard, not a bonus. Your focus will be on delivering clean, typed code within established architectural patterns — and raising the quality bar as you go.
Tech Stack
Core:
PHP 8.2 + Laravel 12.
Database:
MySQL 8 + Redis.
ORM:
Eloquent.
Auth:
Laravel Passport (OAuth 2.0), Spatie Permission (RBAC).
Queue:
Laravel Queue with multiple named workers.
Cloud:
AWS S3, SES, SNS.
Payments:
Mollie.
Real-time:
Pusher, Firebase FCM.
Integrations:
Microsoft Graph, Google API, BIG Register (SOAP).
Testing:
PHPUnit 11.

What You'll Do
Build & Architect:
Deliver new API endpoints following the Controller → Service → Repository pattern.
Ownership:
Take full responsibility for features from analysis to production deployment.
Quality First:
Write feature tests alongside every new feature to raise current coverage.
Integrate:
Extend and maintain external integrations (Mollie, AWS, Firebase, healthcare APIs).
Proactive Improvement:
Identify architectural bottlenecks and edge cases before they become problems.

Requirements
Expert PHP/Laravel:
Deep knowledge of Eloquent, Passport, Policies, Events, and Jobs.
RBAC Patterns:
Experience with complex authorization flows and company-scoped roles.
Database Mastery:
MySQL 8 optimization and writing safe, backwards-compatible migrations.
Mindset:
You think like an owner, not just a task-executor; you communicate risks early.
AI-Tooling:
Proficiency in using AI-powered tools to maximize engineering efficiency.
Testing Culture:
A "craftsmanship" approach where untested code is not considered "done".

Nice to Have
Experience with
Mollie
or equivalent payment lifecycles.
Familiarity with
AWS IVS
(live streaming) or
Pusher
.
Experience using
PHPStan / Larastan
for static analysis.
An active GitHub profile or technical pet-projects.

What We Offer
Remote-first:
Work from any safe location in Ukraine.
Stability:
VANTREXIS is an official
Diia City
resident.
Cooperation format:
We cooperate with specialists under a gig contract model within the
Diia City
legal framework.
Paid Time Off:
Fully paid vacation days and sick leave policy.
Health:
Corporate medical insurance and mental health support.
Culture:
A small, agile team with a flat structure and zero unnecessary bureaucracy.

Hiring Process
HR Screen:
Intro call to discuss your experience, expectations, and
salary range
.
Technical Interview:
Deep dive into your engineering skills and architectural thinking.
Client Technical Challenge:
If the technical interview goes well, the client will provide a time-limited technical assignment to assess your practical skills and decision-making.
Challenge Review Interview:
If the assignment is successful, you will have a short follow-up interview with the client to discuss your code, technical decisions, and overall approach.
Final Decision.