# Senior Software Engineer (Tech Lead), Marketplace Middleware Engineering

**Company:** [Forge](https://hotfix.jobs/companies/forge)
**Location:** Denver, CO
**Role:** Backend Engineering
**Salary:** $189k – $220k/yr
**Experience:** 8+ years
**Skills:** C#, .Net, APIs, Kafka, RabbitMQ, Cqrs, Event Sourcing, SQL, Relational Databases, Marten, CI/CD, Tdd, Domain Driven Design, Agile
**Posted:** 2026-04-15

> Leads development of marketplace middleware using C#/.NET, event-driven systems (Kafka/RabbitMQ), and CQRS patterns. Mentors engineers, designs scalable APIs, and ensures high availability in fintech environment. Requires 8+ years experience and bachelor's degree.

## Job Description

## Responsibilities
- Design, implement, and maintain web applications with marketplace middleware-specific business logic
- Communicate with stakeholders. Work with Architects, Tech Leads, Product, and Design members to arrive at solutions that produce customer and business value.
- Mentor junior engineers. Guide members of the development team on internal and external frameworks, software development best practices, and new technologies.
- Develop concise, articulate, and detailed technical documentation
- Leverage Agile and Lean practices
- Lead a workstream, partner with product on requirements, lead technical requirements, and plan actionable tasks for the team
- Design, build, and maintain automated tests (unit and at times integration), ensuring high code quality
- Support healthy system operations and ensure high levels of availability are achieved

## Qualifications
- Bachelor’s degree in Computer Science, Engineering, or equivalent years of working experience in the field
- 8+ years of software engineering experience
- Experience as a technical lead for a product engineering team
- **Expertise building APIs with C# and .NET**
- **Experience developing event-driven systems leveraging Kafka, RabbitMQ, or similar**
- **Experience with CQRS, Event Sourcing, or similar approaches**
- **Experience with SQL / Relational Databases**
- Experience interpreting and contributing to system design
- Proven track-record of teamwork and delivery
- Fintech or Financial services industry experience with working knowledge of financial regulators and their concerns

## Preferred Qualifications
- Experience with KYC (Know Your Customer) workflows
- Experience with multiple server-side programming languages
- Experience with Test Driven Development (TDD) or Domain Driven Development
- **Experience with Marten for Event Store DB**
- **Experience with CI/CD pipelines and managing application deployments**
- Experience with scaling systems to millions of users
- Working knowledge of the private market

## Compensation
For residents of Denver, CO the annual salary range for this role is **$189,000-$220,000** annual bonus. Final offers may vary from the amount listed based on geography, candidate experience and expertise, bonus, and other factors.

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