Senior Fullstack Software Engineer - JavaScript / TypeScript

Rithum

Get hot jobs first on Telegram

New positions appear faster in our channel

Location
United States
Job Type
full-time
Salary
$100,000-$185,000
Posted
January 26, 2026

Job Description

Rithum™ is the world’s most trusted commerce network, accelerating how brands, suppliers, and retailers work together to deliver seamless e-commerce experiences. We provide an unmatched platform for brands and retailers, enabling them to accelerate growth, optimize operations across channels, scale product offerings and enhance margins.

Today, more than 40,000 companies trust Rithum to grow their business across hundreds of channels, representing over $50 billion in annual GMV. Using our commerce, marketing, and delivery solutions, our customers create optimized consumer shopping journeys from beginning to end.

Overview 

The Engineering Team employs some of the top engineering talent who are constantly working to improve processes, quality and techniques, with the goal of producing the highest quality software solutions in the industry. The lines between traditional QA and software engineering are blurred here, with quality being considered at all stages of development.

Our team is comprised of very talented and highly motivated individuals, who pride themselves on working smarter, not harder. We’re empowered to make local decisions, reducing the overhead of getting things done. We aim for operational excellence, having a DevOps culture and a “you build it, you run it” mentality. We favor a Lean approach to our product development, following agile workflows such as Scrum and Kanban depending on the directive of the team. We welcome new technologies and are constantly self-evaluating our tech stack to make sure we are providing software of the highest quality. Continuous Delivery is important to us, and we are constantly looking to improve our automated testing and continuous integration.

As a Senior Software Engineer for our Retailers business function, you are responsible for writing efficient, well-structured, and maintainable code, setting an example for other engineers as a subject matter expert, mentoring and guiding less experienced engineers.  You work closely with our lead designers and architects to drive our product forward and to ensure the scalability, maintainability and performance of our product suite.  

Responsibilities

  • Provide guidance on system architecture decisions, making sure the technical direction aligns with business goals.
  • Conduct thorough code reviews, ensuring best practices are followed, identifying potential issues, and mentoring junior developers in improving their coding skills.
  • Provide technical guidance, share knowledge, and help junior and mid-level engineers grow in their roles by reviewing their work and offering constructive feedback.
  • Work closely with other teams to ensure seamless delivery of software projects and alignment across departments.
  • Be able to break down large, complex tasks into smaller, manageable components and distribute them among team members.
  • Play a key role in agile processes, including sprint planning, daily stand-ups, retrospectives, and prioritization of tasks.
  • Communicate effectively with stakeholders, including product managers, designers, and clients, to clarify requirements and ensure alignment with business objectives.
  • Handle complex technical challenges, debugging, and resolving issues that may be beyond the scope of junior engineers.
  • Participate in on-call rotation to support the “you build it you own it” mantra
  • Understanding and utilization of software development tools including version control, building processes, debuggers, and test frameworks for:
    • Primary technologies (may include):
      • Typescript, Angular
      • JavaScript, Node.js, React.js
      • Python
      • AWS services (Lambda, DynamoDB, OpenSearch, Kinesis, API Gateway, Step Functions, and others)
      • IaC: Terraform, CloudFormation, Serverless
    • Secondary technologies
      • AWS services (OpenSearch, Lambda, DynamoDB, Kinesis, RDS, ECS, and others)
      • SOAP/REST web service APIs
      • Redis, NoSQL
      • AWS SageMaker, Glue
      • Microsoft SQL Server

 

Qualifications 

Minimum Qualifications  

  • 3+ years' experience developing in Angular, Typescript, JavaScript or Node.js,
  • 3+ years' experience developing in AWS Technologies
  • 2+ years of AI/ML experience with a strong technical focus
  • 2+ years’ experience in Python, TensorFlow/PyTorch, or cloud platforms
  • Proven leadership in high-impact AI projects, with a history of mentoring team members and developing innovative methods that drive departmental objectives
  • Strong verbal and written English communication skills
  • Experience developing web applications, working with databases, and consuming APIs
  • Understanding of relevant software development tools including version control, build processes and test frameworks
  • Ability to work independently with limited supervision

Preferred Qualifications 

  • Bachelor's degree or higher in Computer Science or a closely related field
  • 2+ years of AI/ML experience with a strong technical and strategic focus, with expertise in machine learning algorithms, NLP, computer vision, or large-scale deployment.
  • 2+ years expertise in machine learning algorithms, NLP, computer vision, or large-scale deployment.
  • 2+ years' experience in creating data systems for feature stores or vector databases.
  • Experience with cloud computing infrastructures such as AWS or Azure
  • Use of source code repositories such as Azure DevOps and Git
  • Experience working with SQL Server and NoSQL databases
  • Experience with performance tuning and optimization techniques for high scale systems
  • Experience working with development teams in multiple time zones
  • Proven track record of creating secure and scalable software that scales to dozens or hundreds of servers in a distributed, fault tolerant manner
  • Experience with e-commerce, retail, online marketplaces, or digital advertising
  • Excellent analytical, decision-making and problem-solving skills
  • Proven ability to work in a rapidly changing environment with keen attention to detail

Travel Required

Up to 10%

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.

What it’s like to work at Rithum 

When you join Rithum, you can expect to work with smart risk-takers, courageous collaborators, and curious minds.

As part of the Rithum team, you are valued, supported, and included. Guided by a transparent culture and accessible, approachable leadership, we offer career opportunities aligned to your ambitions and talents. To ensure work and life balance works for you, we also offer an array of resources to support you and your families, including comprehensive benefits and wellness plans.

At Rithum you will:

  • Partner with the leading brands and retailers.
  • Connect with passionate professionals who will help support your goals.
  • Participate in an inclusive, welcoming work atmosphere.
  • Achieve work-life balance through remote-first working conditions, generous time off, and wellness days.
  • Receive industry-competitive compensation and total rewards benefits.

We believe in transparency and fairness in our compensation practices.

For this position, the expected base pay range is: $100,000-$185,000 per year. 

This range represents the base pay for the role across all U.S. locations and is determined based on market data, internal equity, and experience. Final compensation may vary depending on geographic location, skills, and relevant experience.In addition to base pay, we offer a discretionary bonus for non-sales roles, a comprehensive benefits package, and, where applicable, sales incentives.

For this position, the expected discretionary bonus is 10% of the annual base salary.

Benefits 

  • Medical, dental and vision benefits: Affordable health care plans and company HSA contributions, starting on Day 1
  • A 6% 401(k) match
  • Competitive time off package with 20 days of Paid Time Off, 9 Company-Paid holidays, 2 paid floating holidays, 7 paid sick days, 2 Wellness days, and 1 Paid Volunteer Day; at 3 years of service PTO increases to 22 days, and at 5 years it increases to 25 days
  • 12 weeks primary caregiver leave & 4 weeks secondary caregiver leave
  • Accident, critical illness, and hospital indemnity insurance
  • Pet insurance
  • Legal assistance and identity theft insurance plans
  • Life insurance 2x salary
  • Access to the Calm app and the Employee Assistance Program
  • $65/month Remote work stipend for internet
  • Culture and team-building activities
  • Tuition assistance
  • Career development opportunities
  • Charitable contribution match up to $250 per year

Rithum is an equal opportunity employer. We are committed to providing an environment of mutual respect where equal employment opportunities are available to all applicants and teammates without regard to race, religion, color, sex, gender identity, sexual orientation, age, non-disqualifying physical or mental disability, national origin, veteran status or any other protected characteristic. All employment is decided on the basis of qualifications, merit, and business need.

🎯 Who is this job for?

This role is best suited for a senior-level full-stack engineer with strong JavaScript and TypeScript expertise who is comfortable working across frontend (Angular and/or React) and backend (Node.js, Python) in large, production-grade systems. It fits someone with solid experience building and operating cloud-native applications on AWS, designing scalable APIs, and working with both SQL and NoSQL databases. The position will appeal to engineers who enjoy technical leadership—guiding architecture decisions, mentoring other engineers, owning complex features end to end, and participating actively in agile processes. It is especially well matched to candidates who have hands-on experience applying AI/ML in real products (model integration, deployment, or data systems), thrive in distributed teams, and are motivated by building secure, high-scale platforms in fast-moving, enterprise-focused environments.

πŸ’¬ Potential Interview Questions

  1. What is your experience with TypeScript and modern JavaScript frameworks like Angular or React?
    I’ve been working with TypeScript and modern JavaScript for several years, building production apps in both Angular and React. I rely on TypeScript for type safety, refactoring, and clearer contracts between services and components.

  2. How have you used AWS in previous projects?
    I’ve built and operated services using AWS Lambda, API Gateway, DynamoDB, OpenSearch, SQS/SNS, and Step Functions, typically in a serverless or microservices setup, with infrastructure defined via Terraform or CloudFormation.

  3. Can you describe a complex full-stack feature you designed and implemented end-to-end?
    I recently led a feature that ingested data from third-party APIs into a backend service (Node/Python on AWS), processed it asynchronously with queues, exposed results via REST and GraphQL, and built the UI in React/TypeScript with pagination, filtering, and real-time updates.

  4. What is your experience with AI/ML in production systems?
    I’ve integrated ML models via Python (TensorFlow/PyTorch) APIs and cloud AI services, handling model inference at scale, feature preprocessing, monitoring model latency and error rates, and building fallbacks and A/B tests around AI-driven features.

  5. How do you ensure scalability and performance in high-traffic, distributed systems?
    I design for horizontal scaling, use asynchronous processing with queues/streams (e.g., Kinesis/SQS), apply appropriate indexing and caching, implement back-pressure and rate limiting, and continuously monitor key metrics to identify and resolve bottlenecks.

  6. How do you typically mentor junior or mid-level engineers?
    I pair program, review code with detailed but constructive feedback, share design docs and examples, and help them break down complex tasks. I also encourage them to own small features end-to-end and support them through design, implementation, and deployment.

  7. Describe your approach to code quality and automated testing.
    I enforce clear coding standards, leverage TypeScript heavily, and write unit, integration, and API tests. I like having tests run in CI for every PR, with additional smoke/regression tests in staging before deployment to production.

  8. How do you handle breaking down complex technical work for a team?
    I start from the business requirement, identify the core components (API changes, data model updates, UI work, infra), define boundaries and interfaces, then slice the work into independent, testable tasks that can be completed in a sprint or two.

  9. What is your experience with DevOps and the “you build it, you run it” mindset?
    I’ve owned services in production, including CI/CD pipelines, monitoring, on-call rotations, and incident response. I treat observability, logging, metrics, and alerting as part of development, not an afterthought.

  10. Why are you interested in this Senior Fullstack role at Rithum?
    The role combines my strengths—TypeScript, full-stack development, AWS, and AI/ML—with high-scale commerce problems. I like that it’s senior and hands-on, with real architectural influence, mentoring responsibility, and a DevOps culture focused on owning what we ship.

πŸ“‹ Job Summary

Rithum is hiring a Senior Fullstack Software Engineer (Remote, US) to build and scale high-traffic e-commerce systems across a modern JavaScript/TypeScript stack. In this role you’ll own architecture and implementation of web apps and services using Angular/React, Node.js, Python, and AWS (Lambda, DynamoDB, Kinesis, OpenSearch, API Gateway, etc.), while mentoring engineers, driving code quality, and leading complex AI/ML-powered initiatives (TensorFlow/PyTorch, SageMaker, feature stores/vector DBs). This is a great fit for someone with 3+ years in JS/TS/Node + AWS, 2+ years of practical AI/ML experience, strong distributed-systems and performance skills, and a desire to work in a DevOps/“you build it, you run it” culture with competitive pay ($100K–$185K base + ~10% bonus), 401(k) match, robust health benefits, and generous time off.

Required Skills

Angular React Node.js Python

Never miss a JavaScript opportunity

Subscribe to get similar jobs and weekly insights delivered to your inbox

Related jobs

United States

Senior Front End Engineer

Jiffy

Full-time
Argentina, Brazil, Colombia, Poland, Ukraine, Georgia

Frontend Engineer

Solvd Inc.

Full-time
Germany

Full Stack Engineer

Metrikflow

Full-time