.NET Full-Stack Developer, Payfirma

Payment Applications Development

Salary not provided

SQL

React

AWS

.NET

Terraform

RDS

ASP.NET

Rails

REST API

DynamoDB

Blazor

Angular 14+

Senior and Expert level

Toronto

Remote from Canada

Hardware & software for online payments

Be an early applicant

Hardware & software for online payments

1-20 employees

FintechB2BPaymentsCredit cards

Be an early applicant

Salary not provided

SQL

React

AWS

.NET

Terraform

RDS

ASP.NET

Rails

REST API

DynamoDB

Blazor

Angular 14+

Senior and Expert level

Toronto

Remote from Canada

1-20 employees

FintechB2BPaymentsCredit cards

Company mission

To take the pain out of getting paid, the guesswork out of what works, put the “serve” back into service, and keep payments smart and simple.

Job

Company

Role

Who you are

Bachelor’s or Master’s degree in Computer Science, Engineering, or equivalent experience
5+ years of hands-on software engineering experience in full-stack development
Expertise in .NET/C# and ASP.NET Core, with practical experience in front-end frameworks like React, Angular, or Blazor
Proven experience with AWS, including serverless architecture and microservices
Familiarity with payment gateways, international payment rails, or crypto/blockchain integrations (a strong plus)
Strong understanding of RESTful APIs, OAuth, and relational/NoSQL databases (SQL Server, DynamoDB)
Advocate for CI/CD, automated testing, and Agile practices
Excellent collaboration and communication skills with both technical and non-technical stakeholders

What the job involves

As a Full-Stack Developer, you will play a critical role in building scalable, secure, and high-performing payment applications. You’ll work hands-on across backend and frontend systems, collaborating closely with Product, QA, and Architecture teams to deliver innovative solutions. With a strong emphasis on Microsoft technologies and AWS infrastructure, you’ll help drive excellence across our platform
Design, develop, and maintain scalable backend and frontend systems using .NET (C#), ASP.NET Core, and modern frontend frameworks such as React, Angular, or Blazor
Build and optimize robust APIs and microservices to support our payment application ecosystem
Translate business requirements into production-ready, maintainable solutions in collaboration with Product, QA, and Architecture teams
Contribute to sprint planning, estimation, retrospectives, and technical delivery to ensure timely, high-quality outcomes
Write clean, testable, and maintainable code with a strong focus on performance and security
Design and deploy cloud-native solutions leveraging AWS services such as Lambda, ECS, RDS, DynamoDB, and S3
Implement CI/CD automation, infrastructure as code, and modern DevOps practices using tools such as AWS CloudFormation, Terraform, or GitHub Actions
Participate in code reviews, provide constructive feedback, and contribute to continuous improvement across the codebase
Collaborate effectively with stakeholders, ensuring clear communication and alignment on technical solutions
Embrace Agile methodologies, continuous learning, and improvement as part of your daily work

Our take

For many businesses, accepting debit and credit card payments can be a tricky process. Payfirma is setting out to change this by offering solutions for both in-store and online card payments.

When Payfirma first launched, it entered into an already competitive market, home to a number of big-name payment processors such as WorldPay and Stripe. However, it managed to set itself apart from its rivals with its multi-channel solutions, offering an all-in-one service for in-person and online transactions. This has proven largely successful, with the company accruing significant funding to accelerate an expansion into the wider North American market.

Payfirma faces a number of challenges, not only stiff competition from the payments market but a history of boardroom struggles. The company's merger with Merrco Payments marked a fresh start in 2018, and in 2024, it rebranded to KORT Payments. If it can consolidate its progress into the US market, it stands to see impressive revenue growth.

Steph

Company Specialist at Welcome to the Jungle

Insights

Glassdoor (3.2)

Company

Funding (last 2 of 8 rounds)

May 2015

$13m

SERIES A

Nov 2014

$1.1m

CONVERTIBLE

Total funding: $21.6m

Company HQ

Coal Harbour, Vancouver, BC

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