Senior FullStack Developer (Golang, React) (contract)

We are seeking a highly skilled

Senior Fullstack (Golang, React) Developer

to join our dynamic team. As a Senior Fullstack Developer, you will play a key role in architecting and developing a cutting-edge application. Please note,

this position is for one project, not an in-house position , so t he social package , including benefits like sick leave, public holidays, days off, vacations, accounting and necessary equipment provision,

i

s not covered by Selecto . About the project: Domain: Fintech

Platform: web app designed for cashless tipping. It allows users to receive tips and continue with payouts into their personal accounts. Users are also able to overview tipping/payouts history and ratings. The account can be connected to the user's personal device.

Team: Client side: 1 Backend Developer, Product Manager; Selecto’s side: FullStack developer (hiring), QA

Timeline:

part time, 45 hours/month

till the end of February (1st phase of work) and then prolongation (2nd phase of work).

Working hours: flexible

Technology Stack Backend: Go

Frontend: React (React Native or Vue.js experience is a plus)

APIs: REST, GraphQL

Databases: PostgreSQL

Payments & Fintech: Stripe, Plaid

Cloud: AWS, GCP, or Azure

DevOps: CI/CD, infrastructure-as-code

Integrations: Shopify, email services, chat tools

Skills List Strong proficiency in Go

Solid full-stack development background with backend emphasis

Experience with React or React Native (Vue.js acceptable)

Experience designing and integrating REST APIs and GraphQL

Strong understanding of microservices architecture

Experience with SQL databases, preferably PostgreSQL

Hands-on experience with Stripe and Plaid integrations

Experience building fintech or payment-related platforms

Familiarity with mobile platforms (iOS and Android)

Experience working in cloud environments

Familiarity with QR codes, NFC, or POS systems is a plus

Strong DevOps knowledge, including CI/CD pipelines

List of Responsibilities Develop and maintain backend services in Go

Implement subscription, plan, and invoice management

Integrate Stripe using webhooks and internal data handling

Build and maintain integrations with Shopify

Implement transactional emails and user-based communications

Support web app usage tracking and analytics

Integrate chat and support tools

Participate in bug fixing and technical improvements

Collaborate closely with internal developers and consultants

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