Senior Software Engineer – Back End

Wonder

. Design and implement solutions managing complex state across distributed systems .

Posted 10/13/2026full-timeBoston • Massachusetts • United StatesSenior💰 $176,000 - $183,500 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in designing and implementing distributed systems with a focus on reliability and performance. Proficient in Elixir, PostgreSQL, and Infrastructure as Code, with strong system design skills and a product-focused mindset.

Highest-signal resume keywords

Elixir ProgrammingPostgreSQL Database DesignInfrastructure as Code (Terraform)Distributed Systems EngineeringWebSocket and REST API Development

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

ElixirPhoenix FrameworkPostgreSQLWebSocket ProtocolsREST APIsInfrastructure as CodeTerraformDistributed SystemsEvent-Driven ArchitectureRelational Database Design

Soft Skills

Excellent CommunicationInterpersonal SkillsProblem SolvingTechnical Discussion FacilitationMentoring

Industry Keywords

Software EngineeringZero Data LossOrder FulfillmentRobotic CommunicationHuman-Machine InteractionIterative ReviewFeature PlanningCross-Functional CollaborationE-Verify Program

Tech Stack

Tools & technologies

CloudDistributed SystemsElixirPostgresTerraform

About the role

Key responsibilities & impact

Design and implement solutions managing complex state across distributed systems
Guarantee zero data loss in mission-critical workflows involving order fulfillment, robotic communication, and human-machine interaction
Design infrastructure spanning cloud and on-premise resources
Build event-driven architectures, PostgreSQL databases, WebSocket protocols, and containerized applications
Uphold software reliability and advocate for iterative review and testing procedures
Manage the release process and monitor performance
Plan new features by considering product requirements and assessing tradeoffs
Collaborate with peers and specify project tasks
Bring industry-best practices to the team and automate repetitive tasks
Write clear specifications and improve documentation
Provide, seek, and incorporate feedback
Partner with cross-functional teams to design and deploy high-impact features
Guide technical discussions and mentor other engineers

Requirements

What you’ll need

Bachelor’s or Master’s degree in Computer Science or a related field
5+ years of professional software engineering experience building highly concurrent, distributed systems and shipping them to production
Strong system design skills
Product-focused mindset
Track record of owning features end-to-end
Proficiency in Elixir and the Phoenix framework, or significant experience in other functional languages with a desire to master Elixir
Proficiency with PostgreSQL and relational database design
Experience designing, building, and consuming WebSocket events, REST APIs, webhooks, and other message-based systems
Experience designing and deploying infrastructure using Infrastructure as Code; Terraform is used
Pragmatic approach to problem solving
Ability to troubleshoot complex technical obstacles
Excellent communication and interpersonal skills
Ability to facilitate technical discussions with product, design, and operations partners
Minimum 3 days a week in the office, with additional days as needed based on project demands
Employment eligibility verification through the federal government's E-Verify program

Benefits

Comp & perks

Equity
401(k)
Choice of medical, dental, and vision plans
Company paid short and long term disability coverage
Paid time off including flexible time off for exempt employees
Paid vacation for non-exempt employees
Paid sick leave in compliance with applicable law
Paid parental leave
Discounted meals
Exclusive perks across the Wonder family of brands