Backend Software Engineer

Senior Software Engineer, Wikidata Platform

The Wikimedia Foundation is seeking a Senior Software Engineer to join the team ...

Location

Salary:

141352.00 - 175725.00 USD / Year

Wikimedia Foundation

Expiration Date

Until further notice

Requirements

5+ years of experience as a backend or platform engineer working on distributed systems or data platforms
Deep understanding of database and knowledge graph representation technologies and standards
Proficiency in Java, C++, or other systems languages. Ability to set up, scale, and investigate systems is more important than expertise in a particular language.
Experience building and operating production-grade services with SLOs
Familiarity with modern observability tools (metrics, logging, tracing)
Understanding of graph databases, search indexes, or data processing pipelines
Ability to work collaboratively across disciplines and communicate clearly across technical and non-technical audiences
A commitment to learning, resilience, and contributing to a mission-driven engineering culture

Job Responsibility

Design, build, and maintain backend systems and APIs that power Wikidata’s query infrastructure
Improve reliability, observability, and automation of the Wikidata Query Service and data pipelines
Collaborate with SRE, data engineers, and product teams to ensure stability and scalability under growing usage
Monitor production systems, respond to operational incidents, and proactively identify and resolve bottlenecks
Support platform migrations and system upgrades (e.g., triple stores, streaming ingestion)
Contribute to deployment automation, CI/CD workflows, and service instrumentation
Participate in code reviews, design discussions, and technical planning
Document systems and share knowledge with team members and Wikimedia’s broader technical community

Fulltime

Software Engineer - Platform

We build simple yet innovative consumer products and developer APIs that shape h...

Location

United States , New York

Salary:

163200.00 - 223200.00 USD / Year

Plaid

Expiration Date

Until further notice

Requirements

2 to 4 years of software engineering experience, with a proven track record of building and shipping complex backend systems or platforms
Experience designing and scaling distributed systems is highly desired
Proficiency in at least one general-purpose programming language (e.g. Go, Python, Java, C++)
Experience with Go is a plus
Deep understanding of system design and algorithms
Hands-on experience with designing, building, and operating distributed systems or microservices architectures at scale
Familiarity with relational and NoSQL database technologies (for example, MySQL/TiDB, PostgreSQL, MongoDB) and data storage architectures
Experience building data pipelines or working with big data processing frameworks (Spark, Databricks, etc.) is a plus
Excellent communication and teamwork skills

Job Responsibility

Design & Develop Scalable Systems: Build and maintain core platform services with a focus on performance, reliability, and scalability
Infrastructure & Data Platforms: Develop and improve infrastructure for data storage and processing
Developer Productivity Tools: Create internal tools, frameworks, and automation to improve developer productivity and efficiency
Security & Privacy by Design: Integrate security, privacy, and compliance best practices into our platforms
Cross-Team Collaboration: Work hand-in-hand with product engineers and other stakeholders to understand requirements and translate them into reliable platform capabilities
Technical Excellence & Leadership: Uphold high engineering standards through code reviews, testing, and documentation

What we offer

medical, dental, vision, and 401(k)

Fulltime

Software Engineer - Platform

We build simple yet innovative consumer products and developer APIs that shape h...

Location

United States , San Francisco

Salary:

163200.00 - 223200.00 USD / Year

Plaid

Expiration Date

Until further notice

Requirements

2 to 4 years of software engineering experience, with a proven track record of building and shipping complex backend systems or platforms
Experience designing and scaling distributed systems is highly desired
Proficiency in at least one general-purpose programming language (e.g. Go, Python, Java, C++)
Experience with Go is a plus
Deep understanding of system design and algorithms
Hands-on experience with designing, building, and operating distributed systems or microservices architectures at scale
Ability to debug complex issues in a production environment and optimize system performance and reliability
Familiarity with relational and NoSQL database technologies (for example, MySQL/TiDB, PostgreSQL, MongoDB) and data storage architectures
Experience building data pipelines or working with big data processing frameworks (Spark, Databricks, etc.) is a plus
Excellent communication and teamwork skills, with the ability to work effectively in a cross-functional environment

Job Responsibility

Design & Develop Scalable Systems: Build and maintain core platform services with a focus on performance, reliability, and scalability
Infrastructure & Data Platforms: Develop and improve infrastructure for data storage and processing
Developer Productivity Tools: Create internal tools, frameworks, and automation to improve developer productivity and efficiency
Security & Privacy by Design: Integrate security, privacy, and compliance best practices into our platforms
Cross-Team Collaboration: Work hand-in-hand with product engineers and other stakeholders to understand requirements and translate them into reliable platform capabilities
Technical Excellence & Leadership: Uphold high engineering standards through code reviews, testing, and documentation

What we offer

medical
dental
vision
401(k)

Fulltime

Senior Software Engineer, Backend

Kiddom is a groundbreaking educational platform that promotes student equity and...

Location

United States , San Francisco

Salary:

160000.00 - 220000.00 USD / Year

Kiddom

Expiration Date

Until further notice

Requirements

BS or MS in Computer Science or a related field
6+ years professional software engineering experience
Experience scaling integration systems
Proficiency in working with databases (SQL & NoSQL) such as PostgreSQL, MySQL, MongoDB, or Redis
Experience with cloud platforms like AWS, GCP, or Azure, and containerization tools like Docker and Kubernetes
Experience with microservices architecture and distributed systems
Strong knowledge of design patterns and software engineering best practices
You've been through the planning, launching and refactoring phases of code you wrote
Excellent problem solving and debugging skills
Ability to work as part of a collaborative team in a fast-paced environment

Job Responsibility

Design, develop, and maintain backend services, APIs, and databases
Ensure the scalability, security, and performance of backend systems
Collaborate with frontend engineers, product managers, and other stakeholders to deliver high-quality features
Optimize applications for performance, reliability, and scalability
Conduct code reviews and provide mentorship to junior engineers
Troubleshoot and resolve production issues, ensuring system uptime and reliability
Work with our customers to troubleshoot issues and bugs and also help with Kiddom onboarding

What we offer

The opportunity to make a measurable impact in K-12 education
Competitive salary and equity in a hyper-growth, mission-driven organization
Full health benefits: medical, dental, and vision
Flexible vacation policy
401k
An inclusive, positive team culture
A passionate, collaborative team obsessed with building transformative education technology
Meaningful equity
Health insurance benefits: medical (various PPO/HMO/HSA plans), dental, vision, disability and life insurance
One Medical membership (in participating locations)

Fulltime

Staff Software Engineer - Backend

As the Staff Software Engineer for our SaaS platform team, you will be crucial i...

Location

Canada , Toronto

Salary:

189000.00 - 209000.00 CAD / Year

Cyngn

Expiration Date

Until further notice

Requirements

10+ years of software development experience, with a strong focus on backend systems and distributed architectures
Extensive experience in building and scaling cloud-native SaaS platforms, preferably in the IoT or robotics domains
Expert-level proficiency in at least one of Python, Go, Java, or C++, with working knowledge of others
Deep understanding of cloud technologies and services (AWS, Azure, or GCP)
Proven experience with event-driven architectures and message queuing systems (e.g., Kafka, RabbitMQ, Apache Pulsar)
Strong background in database design and optimization, including both SQL and NoSQL solutions
Proficiency in developing scalable WebSocket-based real-time communication systems
Expertise in developing real-time data processing pipelines and analytics systems
Proficiency with containerization and orchestration technologies (Docker, Kubernetes)
Experience with infrastructure-as-code and CI/CD practices (e.g., Terraform, GitOps)

Job Responsibility

Architect and lead the development of a sophisticated, cloud-native fleet management system capable of real-time control and monitoring of numerous autonomous vehicles
Design and implement scalable, distributed systems that can handle high-volume, real-time data processing and decision-making
Develop robust APIs and microservices to support integration with various autonomous vehicle platforms and customer systems
Create efficient algorithms for route optimization, task scheduling, and resource allocation across vehicle fleets
Implement advanced data analytics and machine learning capabilities to provide predictive maintenance, performance optimization, and business intelligence features
Ensure system reliability, security, and compliance with industry standards and regulations
Lead a team of skilled engineers, fostering a culture of innovation, code quality, and continuous improvement
Collaborate with product managers, UX designers, and customers to translate business requirements into technical solutions
Mentor junior developers and contribute to the technical growth of the engineering team
Participate in the entire software development lifecycle, from concept and design to testing, deployment, and maintenance

Senior Software Engineer, Backend (Voice Platform)

At Cresta, the Voice Platform team is on a mission to transform real-time voice ...

Location

Romania , Bucharest

Salary:

Not provided

Cresta

Expiration Date

Until further notice

Requirements

Bachelor’s degree in Computer Science or related field
5+ years of experience in backend system development, distributed systems, or cloud infrastructure
Expertise in Go (or a similar systems language) with strong API and service design skills
Proven experience with scalable architectures using microservices, workflow orchestration, distributed caching, and cloud databases
Strong knowledge of Kubernetes, Docker, and modern cloud infrastructure
Solid understanding of networking, real-time communication protocols, and cloud security best practices
Demonstrated ability to lead complex technical projects from design through production

Job Responsibility

Lead the design and development of scalable, distributed backend microservices in Golang (with some Python for AI-related services)
Own and evolve voice platform integrations with large-scale enterprise communication and contact center systems
Drive initiatives to expand platform capabilities, including bi-directional SIP, WebRTC integrations, multilingual support, advanced transcription, and real-time translation
Build systems that power conversation intelligence for both remote and in-person interactions
Improve observability, reliability, and self-service troubleshooting across the platform
Ensure performance, scalability, and resilience of real-time voice pipelines running in the cloud
Collaborate with cross-functional teams (ML, product, solution architects) to design end-to-end solutions for customer deployments
Provide technical guidance, mentorship, and best practices to other engineers on the team

What we offer

Compensation for this position includes a base salary, equity, and a variety of benefits