The Role
The Backend Software Engineer will design, develop, and maintain scalable backend systems and APIs, ensuring performance and reliability while collaborating with teams and optimizing processes.
Summary Generated by Built In
The Company
Capital Markets Gateway LLC (CMG) is a financial technology firm, uniquely focused on the equity capital markets (ECM), connecting investors and underwriters via a neutral platform. CMG delivers integrated ECM data and analytics, unrivalled transparency into deal flow, and workflow efficiencies for an otherwise fragmented and inefficient process. Providing a digital system of record for firm-wide deal activity, CMG helps clients make more timely, better-informed decisions. Launched in 2017 by a team of ECM practitioners, CMG has completed two successful fundraising rounds and is backed by a group of the world’s most prestigious financial institutions. The CMG platform is currently relied upon by nearly 150 buy-side firms representing $40 trillion in AUM and 20 global investment banks. For more information, please visit www.cmgx.io.
The Role
We’re looking for a Backend Software Engineer to join our team to help build scalable, secure, and high-performing enterprise solutions for the financial industry.
As a Backend Software Engineer, you will play a key role in designing, developing, and maintaining robust backend systems and APIs that power our core products. You’ll collaborate closely with frontend engineers, product managers, and QA teams to ensure seamless data flow, system reliability, and efficient service integration. Your contributions will include optimizing performance, enhancing system architecture, and applying best practices in software development, security, and deployment to support rapid and reliable product delivery.
Our Engineering Team
The CMG engineering team consists of domain experts who work collaboratively within a culture of cross-domain knowledge sharing. We value engineers who are passionate about modern technologies and best practices.
Our engineers are willing to challenge the status quo and are constantly seeking improvement and efficiency in our code-base and platform. CMG engineers are empowered to explore solutions and bring recommendations to the table. We are in a period of making impactful engineering decisions. As part of our process, we believe in taking the time for research and prototyping - this is critical in making the right decisions.
Given the experience of our team, we have naturally adopted best practices from local development, through code review and into production rollouts. Besides the standard pull requests, test automation, code coverage tracking, containerization, and one-click deployments we are constantly reviewing these foundational components to develop new best practices
Key Responsibilities
- Design, develop, and maintain scalable backend services using .NET 9 and ASP.NET Core, and GraphQL
- Collaborate with distributed teams to deliver new product features and enhancements
- Write high-quality, well-tested code and contribute to automated testing frameworks using xUnit.net, Moq, and FluentAssertions
- Participate in architectural discussions and contribute to technical decisions, documentation, and prototyping
- Leverage technologies like Docker, Kubernetes, Redis, RabbitMQ, GraphQL, and PostgreSQL to improve system reliability and performance
- Monitor, debug, and optimize applications using DataDog, Grafana, OpenTelemetry, and Microsoft Azure services
- Contribute to a strong engineering culture through code reviews, knowledge sharing, and continuous improvement
- Engage in agile development processes including sprint planning, daily stand-ups, and retrospectives
What We're Looking For
- English level - C1 or C2
- Proven experience as a Backend Engineer or similar role.
- C#, ASP.NET Core: 3+ years
- Software Engineering: 5+ Years
- Write high-quality, well-tested code
- Structured, detail-oriented thinker with awareness of broader system goals.
- Quick learner, self-motivated, and comfortable working with minimal supervision or dealing with ambiguity.
- Strong analytical, problem-solving, and communication skills (written and verbal).
- Enjoys team collaboration, continuous learning, and building scalable solutions.
- Data-driven mindset with a preference for experimentation and iterative improvement.
- Fintech experience is a plus.
- Experience in equities market data feeds including security master and pricing feeds is a plus.
Our Tech Stack
- Latest .NET version for our backend services
- Entity Framework for our ORM
- MassTransit and RabbitMQ for messaging
- xUnit.net + Moq + FluentAssertions for testing
- Hangfire for our background processing
- Federated GraphQL .NET server running in Hot Chocolate
- Docker + Kubernetes for microservice orchestration
- PostgreSQL for relational db
- Redis Cache for distributed caching and real-time messaging
- Istio for our cluster service mesh
- Swashbuckle for swagger generation
- Microsoft Azure services for hosting and operations, soon to be cross-cloud
- DataDog, Grafana and OpenTelemetry
- GitHub for our Version Control
- React with TypeScript on our front-end
- React Native for Mobile App Development
Our Values
- We innovate with purpose
- We focus on outcomes vs. output
- We believe diverse and inclusive teams fuel innovation
- We are humble yet candid
- We do right by the customer
What We Offer
- 2 year+ contract
- 15 business days of vacation
- Tech courses and conferences
- Top-of-the-line MacBook
- Fully remote working environment
- Flexible working hours
At CMG, we accept nothing less than equity, inclusion and belonging for all. We are deeply committed to listening, learning and constantly improving for the betterment of our teams, clients and communities. CMG is proud to be an Equal Opportunity Employer.
Top Skills
.Net 9
Asp.Net Core
Azure
C#
Datadog
Docker
Fluentassertions
Grafana
GraphQL
Kubernetes
Moq
Opentelemetry
Postgres
RabbitMQ
Redis
Xunit.Net
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The Company
What We Do
Capital Markets Gateway (CMG) is a financial technology firm that is modernizing the equity capital markets (ECM). CMG connects investors and underwriters via a neutral platform that delivers integrated ECM data and analytics, unrivaled transparency, and workflow efficiencies. Providing a digital system of record for firm-wide deal activity, CMG helps clients make more timely, better-informed decisions. Launched in 2017 by a team of ECM practitioners, the CMG platform is currently relied upon by nearly 100 buy side firms representing $12 trillion in AUM and 15 investment banks.
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