Software Engineer, Infrastructure

Kustomer Inc.; New York (NY); On-site; USD 140,000 - 190,000; Full time

Benefits offered by this job

100% healthcare coverage

401K

WiFi and Mobile reimbursement

Generous vacation policy

Stock options

Job summary

Kustomer Inc. is seeking an experienced Infrastructure Engineer to join the Foundation team in New York. You will lead critical backend components, improve developer experience, and drive architectural changes across databases, event buses, and search systems.

Responsibilities include mentoring engineers, advancing observability, and collaborating with InfoSec for security compliance, while delivering scalable, low-latency solutions across the platform.

Qualifications

• Bachelor's degree in Computer Science, Computer Engineering, or equivalent practical experience.
• 5+ years experience building and managing large-scale, highly available, distributed web applications.
• Mastery of a high-level programming language like Go, Python, JavaScript, etc.
• Experience with NoSQL databases like MongoDB.
• Own technical architecture discussions and lead decisions for an engineering organization.
• Lead and mentor engineers through technical projects and initiatives.
• Proficiency with Infrastructure as Code (IaC) tools, including Terraform.
• Experience designing sharding configurations for databases.
• Experience developing internal tools for others.
• Experience creating SLAs, SLOs.

Responsibilities

• Lead and mentor engineers on complex infrastructure projects and initiatives.
• Analyze, design, develop, and improve software infrastructure and platform.
• Drive scalability, performance, and availability improvements.
• Collaborate with CTO and leaders to set the vision for development efforts.
• Bridge gaps across backend systems and data platform, driving best practices.

Skills

Go

Python

JavaScript

Distributed systems

Leadership

Mentorship

MongoDB

Observability

SLA/SLO knowledge

Education

Bachelor's degree in Computer Science/Engineering or equivalent

Tools

Terraform

Kafka

Kinesis

Job description

About the Role

As an infrastructure engineer at Kustomer, you will build systems and abstractions used by teams across the company. You will join a team of experienced engineers and have ample opportunities to continue learning and growing. This role sits on our Foundation team. Responsibilities include improving the developer experience, application observability, and designing architectural changes in critical backend components including database sharding strategies, event bus performance, scaling search systems, and improving end‑to‑end latency. The role is 50% backend systems and 50% infrastructure.

What You’ll Do

• Serve as a Lead and senior member of the team, leading initiatives and key projects
  • Provide guidance and mentorship to team members, fostering a culture of collaboration and technical excellence
• Analyze, design, develop, maintain and improve software infrastructure and platform to expand its capabilities
  • Measure, report and drive improvements on scalability, performance, and availability
  • Lead complex projects and efforts to improve our ability to respond to impaired production systems
  • Lead, plan, and execute large‑scale system changes to meet business objectives
  • Tackle ambiguous engineering problems by designing well‑architected solutions
• Participate in cross‑team initiatives to drive engineering best‑practices
  • Collaborate with the CTO and other technical leaders to set the vision for strategic development efforts
  • Work with various engineering teams to bridge gaps and lead initiatives across backend systems and our data platform
  • Proactively identify systemic inefficiencies, design and implement improvements
  • Become a trusted coach and mentor, actively building strong technical leaders
• Collaborate with the InfoSec team to drive compliance, observability and automation for the security of our platform
  • Work closely with the Security team to address gaps and vulnerabilities during audits to satisfy compliance requirements
  • Manage and coordinate security vulnerabilities and upgrade schedules for EOL (End of Life) software
  • Lead or assist in security investigations as needed

Our Tech Stack

• Javascript (React/node.js), Go, Python
• AWS Cloud, MongoDB, Redis, Elasticsearch
• Terraform, Kafka, Kinesis

Your qualifications and experience

• Bachelor's degree in Computer Science, Computer Engineering, relevant technical field, or equivalent practical experience
• 5+ years experience building and managing large‑scale, highly available, distributed web applications
• Mastery of a high‑level programming language like Go, Python, JavaScript, etc.
• Experience with NoSQL databases like MongoDB
• Own technical architecture discussions and lead decisions for an engineering organization
• Lead and mentor engineers through technical projects and initiatives
• Proficiency with Infrastructure as Code (IaC) tools, including Terraform
• Experience designing sharding configurations for databases
• Experience developing internal tools for others
• Experience creating SLAs, SLOs, SLIs

HIPAA Compliance

All roles at Kustomer may involve handling sensitive personal data.

Benefits

We offer competitive salaries and stock options. In the U.S. we offer 100% healthcare coverage, 401K, WiFi and Mobile reimbursement, and a generous vacation policy; in the U.K. we also offer pension, supplemental health insurance and other perks.

Diversity & Inclusion

Kustomer is committed to bringing together individuals from different backgrounds and perspectives. We strive to create an inclusive environment where everyone can thrive, feel a sense of belonging, and do great work together. We are proud to be an equal‑opportunity employer open to all qualified applicants regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity or expression, Veteran status, or any other legally protected status.

Candidate Privacy Notice

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Disclaimer: Kustomer only contacts candidates from company email addresses ending in kustomer.com and does not seek funds from candidates in any circumstances.