Full Stack Engineer - Payments & FinTech Web Applications

Location: Remote - Based in EST or GMT+1

Compensation: $120K - $150K

We are a high-growth technology company building a robust FinTech and payments platform. We are seeking an experienced Full Stack Engineer with strong product sense and deep technical expertise to design and build the secure, scalable, and high-performing web applications that power our platform. This role requires translating complex backend financial systems into intuitive, reliable user experiences.

You will own the development lifecycle of web applications from design through release, working across the full stack with an emphasis on the frontend user experience. You will collaborate closely with backend teams, ensuring that all features prioritize performance, security, and scalability. You will be expected to treat UI components and APIs as products, maintaining high standards for code quality and architectural clarity.

What You'll Do:

Machine Learning Engineer - Recommendation Systems

Location: London (Office)

Compensation: $250K - $300K

We are a high-growth software development company and a team of elite builders, known for our contributions to one of the largest crypto social networks globally. Our pioneering platform allows anyone to create a coin in under one minute for free, establishing itself as the home for memecoin creation and trading on Solana. The platform has generated over $700 million in revenue and is focused on building the future of social crypto. We are seeking a Machine Learning Engineer to build and scale our core recommendation systems.

You will be responsible for designing, building, and deploying the machine learning systems that drive user discovery and engagement across our rapidly growing platform. This is a high-impact role requiring end-to-end ownership of critical features, ensuring our models scale effectively to handle significant real-time volume and user activity.

Key Responsibilities:

Senior Backend Engineer - Stablecoin Infrastructure

Location: Remote - Based in EST timezone

Compensation: $175K - $225K

We are a technology company building a full-service platform that transforms how money moves. Our mission is to make digital dollars the core of a new, global financial fabric—faster, more efficient, and universally accessible. We are creating foundational infrastructure that makes issuing, managing, and integrating stable, dollar-based value on-chain seamless for developers, fintechs, and institutions. We are backed by world-class investors and are growing a team to reimagine how value moves online.

We are seeking a Senior Backend Engineer to accelerate the delivery of both critical internal tooling and high-impact customer-facing products. You will join a small, high-performance team that applies the discipline of high-performance finance to a fast-moving, crypto-native startup environment.

In this role, you will:

Founding Engineer

Location: New York City, NY (100% On-site)

Compensation: $150,000 - $250,000 (Base Salary) + Significant Early-Stage Equity

We are an early-stage, YC-backed company building the future clean data layer for the internet, starting with financial firms. Our platform solves complex data cleaning, extraction, and validation problems by combining advanced AI (LLMs) with expert human review via a simple API. We're looking for a highly capable and driven Founding Engineer to join us and help build the core of our platform from the ground up. This role offers an opportunity for the right candidate to grow into a CTO-level position.

As a Founding Engineer, you will take ownership of critical systems that drive our product, working across the entire stack. You will directly influence our product strategy and technical direction, experiencing the full arc of building a successful startup.

What you'll do:

Software Engineer (Founding iOS)

Location: New York, NY or Toronto, ON

Employment Type: Full-time

Work Arrangement: On-site 5 days a week

About the Role

Our client is a well-funded FinTech company with $42 million in total funding, building a modern banking and cash management platform for businesses that sell physical goods. Their mission is to turn banking from a cost center into a profit center by automating financial tasks for consumer brands with sales between $\$5$ million and $\$200$ million. They already serve hundreds of customers that collectively produce over $1 billion in GMV.

They are looking for a Founding iOS Engineer to launch and own the entire mobile experience. This is a critical, high-impact role focused on transforming complex financial data into a simple, beautiful, high-performance iOS application that customers will use daily.

What You'll Do

Full Stack Engineer (AI-Native Compliance)

Location: New York, NY

Employment Type: Full-time

Work Arrangement: On-site 5 days a week

About the Role

Our client is a rapidly growing AI startup building the next-generation compliance platform. Launched in April 2025, they have already crossed $1.2 million ARR with a small team by automating complex security and compliance processes (SOC 2, ISO, HIPAA, GDPR) using AI agents—turning months-long audits into days.

They are looking for a Full Stack Engineer who is hungry, highly technical, and ready to own features from concept to production. As an early engineer, you will work directly with the founders, shape core product decisions, and build the infrastructure necessary to scale the company toward nine figures.

What You'll Do

As a Senior Staff Software Engineer, you will shape and scale our backend platform, driving technical excellence while remaining hands-on. You’ll lead architecture, mentor engineers, and collaborate across teams to deliver cloud-native systems that are secure, scalable, and reliable.

Key Responsibilities

• Define and implement backend architecture and technical strategy.
• Own feature delivery end-to-end, ensuring performance and scalability.
• Champion engineering best practices (TDD, CI/CD, clean architecture).
• Conduct code reviews and mentor engineers to raise technical standards.
• Improve workflows, monitoring, and incident management.
• Partner with Product and stakeholders to align technical and business goals.

Requirements

Requirements

• 7+ years backend engineering, 5+ with Node.js & TypeScript in production.
• Deep expertise in AWS services (Lambda, Cognito, S3, DynamoDB, SQS/SNS).
• Proven track record with serverless, microservices, event-driven systems.
• Strong background in API design, distributed systems, debugging.
• Leadership experience in architecture decisions and team mentorship.

Role profile – Microservices Solution Architect

A Microservices Solution Architect designs and implements solutions using microservices architecture, ensuring they meet business needs and adhere to technical standards. They collaborate with teams, provide technical guidance, and ensure robust, scalable architectures.

Duties and Responsibilities

Architect, design, and implement microservices-based solutions that align with business requirements and technical standards. 

Provide technical leadership and mentorship to development teams, ensuring proper implementation of designs. 

Work with product owners, business analysts, and other cross-functional teams to understand requirements and deliver solutions. 

Conduct architectural assessments, develop strategies, and create roadmaps for digital programs. 

Proactively identify and resolve architectural challenges, ensuring the system is robust and scalable. 

Design solutions for high performance, throughput, and scalability, considering factors like memory and in-memory tools. 

Ensure the security of microservices and the overall system, considering factors like authentication and authorization. 

Required Skills

A minimum of 8 to 10 years of experience and Deep understanding of microservices principles, patterns, and best practices. 

Proficiency in languages like Java, Spring Boot, or Node.js. 

With more than 20 years of proven experience, QUALCO Group is a leading Fintech solutions provider, offering a wide range of analytics-driven, highly scalable enterprise software solutions in over 35 countries worldwide. Our end-to-end technology solutions cover a wide range of needs for Banking, Financial Services, Utilities, Insurance, Retail organizations, and beyond.

We are looking for a Senior Developer for the implementation and improvement of technical software functions in response to functional specifications.

Responsibilities:

About Jobgether:

Jobgether is a Talent Matching Platform that partners with companies worldwide to efficiently connect top talent with the right opportunities through AI-driven job matching.

One of our companies is currently looking for a Senior Full Stack Engineer in Germany.

This is an opportunity to join a fast-growing tech team dedicated to transforming finance and accounting through innovative, scalable software solutions. As a Senior Full Stack Engineer, you’ll play a critical role in building systems that power order-to-cash and procure-to-pay workflows. You’ll work across PHP, Go, and React to develop intuitive features and flexible architecture for handling payment transactions. Collaborating closely with Product, QA, and Design, you’ll help shape the technology that impacts thousands of daily users and supports real-world financial operations.

Accountabilities: