Software Engineer

Build and operate highly scalable Go backend services and data infrastructure for the AT Protocol ecosystem. Scale systems to support hundreds of millions of users, hundreds of millions of events, petabytes of NVMe storage, thousands of CPU cores, and tens of terabytes of RAM. Responsibilities include developing mission-critical services, managing production operations, and working with databases, distributed systems, operating systems, networking, and storage technologies. The summary above was generated by AI Bluesky’s mission is to transition the social web from platforms to protocols. We’re building a federated social network where users have more power. Our team has decades of combined experience building distributed applications. As a backend dev, you’ll build data infrastructure that powers Bluesky’s developer services and will be a critical part of transforming social media. Working on our AT Protocol-oriented services, you’ll be building and maintaining systems running on dense, latest-generation, bare-metal servers running in our own racks serving hundreds of thousands of events per second. Responsibilities:

• Scale our Go production services to hundreds of millions of users
• Build mission critical data infrastructure that powers much of the AT Protocol ecosystem
• Build services that scale across tens of terabytes of RAM, thousands of CPU cores, and petabytes of NVME storage

• Have strong fundamental programming and software engineering skills
• Have extensive experience with Go (e.g. 3+ years)
• Have built scalable backend systems (1M+ ops/sec) (e.g. data services, load balancers, etc.)
• Have familiarity with the upper limits of operating systems, networks, and storage.
• Have significant experience with database systems (e.g. Postgres, MySQL, SQLite)
• Have some experience with with other data stores (e.g. Scylla/Cassandra, Redis, ClickHouse)
• Have a high bar for ownership and operation of production services.
• Like working on small, fast-moving teams
• Have read the AT Protocol docs and want to contribute

We’re especially excited if you have:

• Previous experience working on social or Internet infrastructure at large scale

We’re a fully remote team, though a significant overlap of working hours with US/Pacific is required. For full-time roles, we offer health, dental, and vision insurance. To learn more about us, check out:

• bsky.social
• atproto.com

Please attach your resume and links to your GitHub, GitLab, or a portfolio of past work within the same attachment. The anticipated base salary range for this position is $179,000 - $242,000, excluding equity. Equity will be considered in the total compensation package. The final base salary for this role will be based on the individual’s geographic location, as well as experience level, skill set, training, licenses and certifications., United States Easy Apply 173K-255K Annually Senior level 173K-255K Annually Senior level Big Data * Fintech * Mobile * Payments * Financial Services Build and operate Affirm’s AI Platform, including LLM and MCP gateways, agent runtimes, evaluation services, and observability systems. Design secure, highly available backend infrastructure with identity, quota, routing, caching, failover, cost attribution, and governance controls. Own technical projects from design through launch and on-call, establish engineering standards, collaborate across security and infrastructure teams, and mentor engineers while supporting production AI workloads at scale. Top Skills: AWSAws BedrockChatgptClaudeKotlinKubernetesLitellmMcpMySQLPython Affirm, United States Easy Apply 236K-325K Annually Senior level 236K-325K Annually Senior level Big Data * Fintech * Mobile * Payments * Financial Services Architect and operate Affirm’s large-scale Amazon EKS compute platform, including cluster lifecycle, node management, autoscaling, shared components, infrastructure automation, workload safety policies, observability, cost and capacity optimization, and self-service workflows. The role drives technical strategy, mentors engineers, partners cross-functionally, and participates in on-call incident response., 2 Days Ago Remote or Hybrid 165K-250K Annually Senior level 165K-250K Annually Senior level Cloud * Digital Media * News + Entertainment * On-Demand Build and operate Philo’s ML and LLM infrastructure, including AWS and Kubernetes platforms, GPU scheduling, model serving, inference optimization, monitoring, evaluation, experimentation, and CI/CD. The role establishes infrastructure best practices, reliability, security, scalability, and Infrastructure as Code while supporting recommendation, video classification, and agent workloads. It also involves collaborating with engineers and vendors to deploy, instrument, and manage production systems. Top Skills: AirflowAlbAmazon BedrockAnthropicAWSC++CloudFormationCloudwatchDagsterDatadogDnsDockerDvcElasticacheElbElkFeastFluentdGitlabGoGrafanaHTTPIamInfluxdbJavaScriptJenkinsKubeflowKubernetesLakefsLinuxLitellmMetaflowMlflowNlbNvidia TritonOpenaiPgvectorPineconePrometheusPythonRagRayRdsRoute 53RubySqsTcp/IpTectonTensorrt-LlmTerraformTgiTickTypescriptVllmVpcWeaviateWeights & Biases

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