Senior Software Development Engineer (C#), Core Integrations Team

Reposted 18 Days Ago
Hiring Remotely in USA
Remote
Senior level
Fintech • Software
The Role
Develop backend services and APIs, improve existing solutions, create automated tests, and collaborate with the team while ensuring code quality and documentation.
Summary Generated by Built In
We are looking for a Senior Back-End C# Developer to join our Core Integrations Team, responsible for integrating our mobile banking platform with major US banking cores such as Keystone, Ultradata, and Symitar. You will contribute to one of the company’s core back-end services used across all products, helping improve the daily experience of millions of users.

In this role, you’ll work on real-world banking integrations, complex APIs, and high-load services, collaborate closely with a friendly, distributed team, and solve challenging problems in a fintech environment. You’ll also take part in modernizing a monolithic architecture and preparing it for cloud migration while working in an Agile team with mature processes.

This position is remote, full-time, and requires some periodic overlap with US Pacific daytime hours (5–9 AM PST).

Primary Responsibilities:

  • Design, implement, test and support backend services and APIs.
  • Develop new features and enhance existing functionality.
  • Investigate live client requests.
  • Refine requirements thoughtfully and proactively reach stakeholder to clarify requirements.
  • Compose test plan together with the team and thoroughly test your changes.
  • Write all kinds of automated tests according to the test pyramid principle.
  • Fix bugs according to agreed time frames.
  • Develop according to team processes and agreements.
  • Refactor code communicating with code owners and architects.
  • Document API and features to enable easy implementation and support.
  • Provide support during deployment sessions when needed.

Requirements:

  • 5+ years as a back-end C# developer.
  • Demonstrated ability to write well-designed, clean, reusable, and testable code.
  • Think systematically, act proactively, take responsibility and achieve success without direct guidance.
  • 5-9 AM PST mandatory overlap hours with the rest of team members.
  • Experience writing unit tests (xUnit or other framework).
  • Intermediate level of English for communications and writing technical documentation.
  • Experience with Git.

As Plus:

  • Experience integrating with 3rd party APIs.
  • Experience writing integration, API, performance and load tests.
  • Experience developing high-load services.
  • Experience solving tasks in complex domains.
  • Experience working remotely within a distributed team.
  • Experience in API mocking using libraries like mountebank.
  • Knowledge of TCP.
  • Knowledge or experience using gRPC.

Our benefits:

  • Remote-friendly role, depending on location eligibility
  • Flexible working hours
  • Experienced development teams
  • Long-term employment
  • Competitive salary 
  • Paid vacation and days off on national holidays
  • Paid sick leave and internal medical insurance policy
  • Mental health coverage
  • Compensation for training and additional education
  • Community of practice, regular knowledge sharing among colleagues
  • Provision of computer equipment if necessary
  • Internet compensation (50$ per month)
  • And other benefits, described in detail in the Staff Handbook

Access Softek is a US-based product IT company with over 30 years of experience building digital banking solutions for credit unions across the United States. Today, our software is used by more than 6 million users in 350+ financial institutions, helping millions of people manage their finances every day.

Top Skills

Apache Kafka
Asp.Net
AWS
C#
Entity Framework
Git
GraphQL
Grpc
HTTP
Nats
NoSQL
Nunit
RabbitMQ
Redis
Soap
SQL
Tcp
Xunit
Am I A Good Fit?
beta
Get Personalized Job Insights.
Our AI-powered fit analysis compares your resume with a job listing so you know if your skills & experience align.

The Company
HQ: Berkeley, CA
245 Employees
Year Founded: 1986

What We Do

Access Softek’s innovative financial software solutions keep 400+ credit unions and banks ahead of the technological curve. Our Access Digital banking platform delivers the innovative features that users demand, the security that financial institutions need, and the technology needed to compete in today’s market.

Fintech innovation is our passion. Our clients are first-to-market with dozens of new features like biometrics banking, wearable apps, passwordless authentication, and real-time mobile deposits. Today, we offer an enterprise suite of cutting-edge digital banking tools: mobile banking platforms, online banking platforms, the best lending apps, account opening software, integrated robo-advisor and automated investment tools, real-time fraud control, conversational banking, video chat, commercial banking, biometric authentication, banking chatbots, data feed, and more.

We started out in 1986 as a custom development shop with a focus on financial software solutions. Leading high-tech companies like Microsoft, Apple and Sony partnered with us because of our proven ability to solve complex problems with cutting-edge technology. Today we rank among the top digital banking providers, with offices in Berkeley, New York City, Chicago and Vancouver.

Similar Jobs

Airwallex Logo Airwallex

Senior Manager, Revenue Enablement

Artificial Intelligence • Fintech • Payments • Business Intelligence • Financial Services • Generative AI
Remote or Hybrid
San Francisco, CA, USA
2000 Employees

Snap Inc. Logo Snap Inc.

Senior Data Scientist

Artificial Intelligence • Cloud • Machine Learning • Mobile • Software • Virtual Reality • App development
Remote or Hybrid
6 Locations
5000 Employees
162K-284K Annually

DFIN Logo DFIN

Account Executive

Fintech • Software
Remote or Hybrid
New York, NY, USA
1750 Employees

DFIN Logo DFIN

Account Executive

Fintech • Software
Remote or Hybrid
Houston, TX, USA
1750 Employees

Similar Companies Hiring

Scotch Thumbnail
Software • Retail • Payments • Fintech • eCommerce • Artificial Intelligence • Analytics
US
25 Employees
Milestone Systems Thumbnail
Software • Security • Other • Big Data Analytics • Artificial Intelligence • Analytics
Lake Oswego, OR
1500 Employees
Fairly Even Thumbnail
Software • Sales • Robotics • Other • Hospitality • Hardware
New York, NY

Sign up now Access later

Create Free Account

Please log in or sign up to report this job.

Create Free Account