Senior Backend Engineer

Description

Company Overview

AdCellerant is an award-winning tech-enabled services company that has brought Madison Avenue-level digital marketing solutions to Main Street businesses since 2013. We help local marketers, media companies, agencies, and channel sales organizations leverage our proprietary advertising software platform, Ui.Marketing.

Summary of Role

We are looking for a highly skilled, self-directed Senior Backend Engineer with a strong polyglot mindset. Our ecosystem relies on both Node.js and Java. We need a versatile engineer who can confidently navigate and contribute to multiple codebases. If you have deep expertise in one with a working knowledge of the other, we want to talk to you.

You won't just be writing code; you will take full ownership of complex technical challenges from conception to deployment. We are specifically looking for a forward-thinking engineer who smartly leverages AI coding assistants. You should know how to use AI to rapidly context-switch between projects or languages, accelerate development, translate concepts across stacks, and automate the mundane so you can focus on high-level architecture.

Responsibilities

• Autonomous Execution: Architect, build, and maintain robust backend services across both Node.js and Java environments. Take full ownership of features and microservices with minimal oversight.
• System Architecture: Design scalable, highly available backend architectures and APIs (GraphQL, REST) that integrate seamlessly with frontend applications and diverse backend microservices.
• Database Management: Design and optimize database schemas (SQL and NoSQL) to ensure data integrity and high performance across all services.
• Code Quality & Mentorship: Maintain high standards of code quality through code reviews and automated CI/CD pipelines. Champion a polyglot culture and share your knowledge of workflows with the broader engineering team.
• Problem Solving: Proactively identify performance bottlenecks and security vulnerabilities, implementing effective solutions independently.
• AI-Driven Context Switching: Actively utilize AI development tools (such as GitHub Copilot and Cursor) to accelerate coding, rapidly adapt to unfamiliar design patterns in secondary languages, and translate logic between Node.js and Java ecosystems.

Requirements

• Experience: 5+ years of professional backend software development experience.
• Languages & Frameworks: Deep, expert-level knowledge in at least one of our core languages, with strong professional capability in the other:
• Node.js (Preferred): TypeScript, NestJS, Express, or Fastify.
• Java: Modern Java, Spring Boot, or similar frameworks.
• Polyglot Mindset: Demonstrated ability and willingness to learn new languages and frameworks quickly. You view languages as tools, not religions.
• AI Tooling Fluency: Proven experience using AI coding assistants and prompt engineering to improve daily output, reduce technical debt, and bridge knowledge gaps when working outside your primary language.
• Databases: Strong experience with relational databases (e.g., PostgreSQL, MySQL) and NoSQL databases (e.g., Redis, Elasticsearch).
• Cloud & DevOps: Solid understanding of cloud platforms (AWS, GCP, or Azure), containerization (Docker, Kubernetes), and modern CI/CD pipelines.
• Autonomy: Demonstrated ability to thrive in a highly autonomous environment, managing your own time and delivering on complex projects without micromanagement.
• Experience building, scaling, and communicating between event-driven microservices written in different languages.
• Previous experience integrating AI APIs (OpenAI, Anthropic) into production applications.
• Contributions to open-source projects or a portfolio showcasing independent, multi-language project execution.

Location Information

This role is preferred to be located near our Denver, CO office, with hybrid work from home flexibility.

Team members must live and work in the United States* (*territories excluded), and have access to reliable, high-speed internet.

Compensation

Salary Range: $135,000.00 - $165,000.00 annually, depending on experience and qualifications.

Benefits

AdCellerant offers full-time employees:

• Paid vacation, holidays, and sick days
• Health/dental/vision benefits
• 401k retirement plan and company match contribution
• Generous paid parental leave
• Wellness Program
• Work from home flexibility
• Denver, CO headquarters available for hybrid work with in office perks

Life at AdCellerant

Our top priority is our team above everything else. We set out to build a great workplace, followed by a great company. We know that if our team is motivated, all the company’s business objectives can be achieved. Our goal of team first since our founding has led to being recognized in a few ways we are proud of:

• Denver Business Journal “Best Workplace”
• Built In Colorado’s Best Workplaces 2018, 2019, 2020, 2022, 2023
• Inc. 5000 Award for Fastest Growing Companies in the U.S, 5 years running: 2018 - 2022

Those who join our team join the ranks of an engaged, lively, industry-leading team! We are united in our mission to make Madison Avenue-level digital advertising solutions available to Main Street marketers, and you’ll find our main Pillars woven throughout everything we do.

AdCellerant’s Pillars:

• Driving results for partners & local businesses
• Technology innovations to stay ahead of the curve
• Our team members’ success & well being
• Exceptional customer service for every single partner
• Conducting our business in an ethical & sustainable way
• Making our local community a better place

Other Requirements

Currently legally authorized to work in the United States on a full-time basis.

Equal Opportunity

AdCellerant is proud to be an equal opportunity workplace. We are committed to providing an environment of mutual respect where equal employment opportunities are available to all applicants and teammates regardless of race, religion, color, national origin, gender (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, gender expression, marital status, citizenship, age, Veteran status, status as an individual with a disability, or other applicable legally protected characteristics.

Important: Security Notice

We're excited that you're interested in exploring job opportunities with AdCellerant! However, we also want to remind you to be cautious and wary of recruitment scams that have become increasingly common across all industries.

Fraudsters may pose as a representative of a company, and unsuspecting applicants may be invited to participate in fake interviews, asked to fill out fabricated employment applications, or even issued fake offer letters. This is all in an attempt to entice victims to pay money or divulge sensitive personal information.

We take your safety and privacy seriously, and want to assure you that we will never ask for your financial information during any part of the interview process.

Our communication will always come from an @careers.adcellerant.com or @adcellerant.com domain.

If you receive any suspicious activity, please stop communication with the individual and consider reporting them to the US FBI Internet Crime Complaint Center. If you're unsure about the legitimacy of an email you received from our recruiting team, please forward it to us at info@adcellerant.com

*** Please do not send resumes via email ***

Additional Notices

E-Verify Statement

AdCellerant participates in the E-Verify program for all new hires. We comply with all applicable federal, state, and local laws regarding employment eligibility verification and do not use E-Verify to pre-screen applicants.

Colorado Job Application Fairness Act

Colorado Residents: In any materials you submit in connection with your job application, you may redact or remove age-identifying information such as age, date of birth, or dates of school attendance or graduation. Should you wish to exercise your right to redact such information, please redact it prior to submitting the documentation. You will not be penalized for redacting or removing this information.

Application Deadline

April 30th or until the role is filled