26 Software Engineer Resume Examples, Backed by Real Resumes (2026)

• Wrote Go services for the timesheet approval flow, packaged them in Docker, and kept them steady for 120+ concurrent users.
• Added database indexes and rewrote slow queries behind the pay stub page, cutting its response time by 20%.
• Put an API proxy in front of the payroll screens so internal record IDs no longer reached the browser, closing a penetration test finding.
• Set up AWS build and deploy pipelines so each merge lands in staging and goes to production after one approval.
• Swapped a list scan in the shift lookup for a hash map index, so lookups stayed quick as the staff list grew.
• Take tickets from grooming through code review to release in Scrum sprints.

• Wrote Python scripts that rerun and score lab experiments the same way every time, replacing checks the team used to do by hand.
• Grouped open-ended survey answers with k-means in scikit-learn and charted the clusters for the lab's weekly meeting.

• Profiled the slowest screens on a customer portal and pulled state up out of nested React components, so pages loaded about 25% faster.
• Shipped small features and bug fixes across the React front end and its Node.js API without breaking calls from existing clients.
• Wrote a Python script that parses call log exports and flags failed requests, so support staff could spot patterns without reading raw logs.

• Added WebSocket push to an internal ad reporting tool, so new numbers reached staff 45% faster and without a reload.
• Wrote Jest tests for the tool's data formatting code and kept its coverage above 65% before each change went out.
• Patched front-end code and dependencies during a framework upgrade and ran regression tests on each page.

Map of local food pantries with open hours and stock notes, built with a campus volunteer group. github.com/ethan-morales-example12

• Scheduled a nightly job that pulls pantry listings from county feeds and merges duplicate entries, saving about 1.5 hours of hand work a week.
• Added role-based sign-in so pantry staff can edit hours while visitors can only view them.
• Cached map tiles and search results so typical searches came back quicker.

Builds game schedules for campus intramural leagues and keeps players up to date.

• Built the admin dashboard where league organizers manage games, teams, and sign-ups, cutting their admin work by about 30%.
• Pushed live score and reschedule alerts to players over WebSockets.
• Checked new sign-up passwords against a public list of breached passwords.

Course project predicting loan default from public lending data.

• Joined and cleaned the lending tables in SQL before training, dropping rows with missing income data.
• Tested logistic regression against gradient boosting on a held-out set, and the better one reached about 65% accuracy.
• Picked out the strongest risk features and explained them in a plain-language notebook for readers without a stats background.

• Built and shipped three React components for an internal analytics dashboard used by 40+ employees, cutting a recurring manual report from 2 hours to under 10 minutes.
• Wrote a Python FastAPI endpoint backed by PostgreSQL that reduced a data-lookup call from 900ms to 150ms, an 80% latency drop.
• Added 120+ unit and integration tests with Pytest and Jest, raising service test coverage from 55% to 90%.
• Collaborated in a 6-person Agile team, opening 30+ pull requests and completing code reviews in a Git and CI/CD workflow.

• Developed a Java and Spring Boot REST service that automated an internal onboarding task, saving the team roughly 10 hours per week.
• Containerized a legacy Node.js service with Docker, cutting local setup time for new developers from a full day to under 30 minutes.
• Fixed 25+ backlog bugs and shipped a MySQL query optimization that improved a page load time by 40%.

• Led weekly lab sections for 60+ students, teaching data structures, algorithms, and debugging in Java and C++.
• Graded assignments and held office hours, helping raise the section average on the final project by 15%.

• Built and deployed a full-stack habit-tracking web app with a React frontend, Node.js and Express API, and PostgreSQL, serving 200+ registered users. github.com/micah-ellison-example12

• Implemented a GPU-accelerated image-filter library in C++ and CUDA, achieving a 12x speedup over the single-threaded baseline on 4K images.

• Created a Python chatbot that answers course questions from a document set, exposing a FastAPI backend with 90% unit-test coverage.

• Build and ship React and Node.js features on a scheduling product used by 40,000 monthly active users, releasing to production twice a week
• Cut page load time on the booking flow from 3.1s to 1.4s by splitting bundles and caching 3 heavy API calls
• Wrote 210 unit and integration tests while closing 45 tickets in the first six months, holding escaped bugs on owned features to 2
• Fixed a duplicate booking bug that affected about 300 appointments a month by adding an idempotency check to the reservation API
• Projects: built an open source rate limiting middleware for Express with 180 GitHub stars and 12,000 npm downloads, plus a REST API scaffolding tool used by 3 student teams (see GitHub)

• Built an internal Python dashboard that replaced a weekly manual report for 25 analysts, saving about 6 hours of team time a week
• Added 3 PostgreSQL query optimizations that cut a nightly ETL job from 55 minutes to 18
• Shipped 14 pull requests to production over a 12 week internship, all reviewed and merged
• Documented the team's local setup, cutting new intern onboarding from 3 days to 1

• Led 2 weekly lab sections of 30 students each covering trees, graphs, and hash tables
• Graded 400+ assignments per term and held 4 office hours a week
• Wrote 6 autograder test suites the course still uses

• Build React and Node.js features for the internal claims platform used by 800 adjusters and support staff daily
• Shipped a document intake redesign that cut claim setup time from 12 minutes to 4, saving about 900 staff hours a month
• Fixed 60+ bugs in the first year, including a rounding error in payout batches that had generated 200 manual corrections a month
• Wrote SQL and PostgreSQL migrations for 5 releases with zero rollback events
• Projects: built an open source CSV validation library for claims-style data with 90 GitHub stars, plus a bootcamp capstone that matched 1,400 stray pets to shelters (see GitHub)

• Ran a 12 person claims team processing 3,500 claims a month, holding cycle time under 9 days against a 12 day target
• Built the spreadsheet automations that cut weekly reporting from 6 hours to 45 minutes, the work that pushed her toward code
• Cut rework 25% by writing the team's first documented intake checklist, later adopted by 3 other regions

• Handled a caseload of 140 active property claims with a 96% on-time contact rate
• Ranked in the top 10% of 60 specialists on quality audits for two straight years

• Own 4 Go services on the shipment tracking platform that handle 12M requests a day at 99.95% availability
• Led the rewrite of the rate quoting engine, cutting p99 latency from 900ms to 140ms and errors by 85%
• Designed the event pipeline that reconciles 2.4M carrier status updates a day, dropping missed updates from 1.8% to 0.1%
• Mentor 4 mid-level engineers through weekly 1:1s and design reviews; 2 promoted in the last two years
• Cut the team's AWS bill 22% (about $18K a month) by right-sizing Kubernetes workloads and moving batch jobs to spot instances
• Halved mean time to recovery on the team's pager, from 52 minutes to 24, by adding runbooks and tracing to all owned services

• Built the merchant onboarding API used by 9,000 merchants, cutting median signup time from 2 days to 35 minutes
• Shipped a TypeScript and React dashboard for chargeback disputes that handled 15,000 cases a month
• Moved 6 services from EC2 to Kubernetes with zero downtime over 9 months, writing the Terraform modules 3 other teams reused
• Raised test coverage on the payments core from 41% to 87% and made the suite a merge gate

• Built Python services for a patient scheduling product used by 60 clinics and 1,200 daily staff users
• Cut report generation time from 4 minutes to 20 seconds by rewriting 30 PostgreSQL queries and adding indexes
• Shipped an HL7 intake integration that processed 50,000 messages a day with a 0.2% error rate

• Built and maintained 12 client sites in JavaScript and PHP with a 2 person team
• Automated deploys with Git hooks, cutting release mistakes to zero over the final 8 months

• Set direction for a 5 team platform org serving 340 engineers and about 400 microservices across 3 Kubernetes clusters
• Led the build of an internal deploy platform that took releases from 40 a week to 300 a week while change failure rate fell from 9% to 3%
• Wrote the multi-account Terraform architecture (90+ modules) that brought infrastructure drift incidents from monthly to zero in a year
• Cut compute spend $1.1M a year through autoscaling policies, bin packing, and a chargeback dashboard teams actually read
• Authored 14 accepted RFCs, including the service ownership standard now covering every production service
• Projects: maintain an open source Terraform provider testing harness with 600 GitHub stars, used in the company's CI (see GitHub)

• Ran reliability for a B2B SaaS product with 99.99% SLA across 120 services and 2,000 nodes
• Led the migration of 85 services from VMs to Kubernetes over 18 months with zero customer-facing downtime
• Built the on-call program for 9 teams, cutting pages per week from 110 to 30 through SLO reviews and alert pruning
• Reduced mean time to detection from 14 minutes to 90 seconds by standardizing metrics and tracing across services

• Built Python and Go tooling that provisioned 800 servers a quarter, replacing a 3 day manual process with a 2 hour pipeline
• Automated PostgreSQL backup and restore across 40 databases, cutting restore time from 6 hours to 45 minutes
• Moved the company's build system to containerized CI, doubling build throughput for 70 engineers

• Managed 300 Linux servers and the ticket queue for 1,100 employees
• Scripted patching and user provisioning in Python, cutting routine ticket volume 35%

• Ship iOS features in Swift and SwiftUI for a banking app with 900,000 monthly active users, on a 6 person mobile team
• Led the mobile check deposit rebuild, lifting deposit completion rate from 81% to 93% and cutting related support tickets 40%
• Raised crash-free sessions from 99.2% to 99.85% by fixing the top 20 crash groups and adding pre-release device farm runs
• Migrated 60 screens from UIKit to SwiftUI behind feature flags over 14 months with no release delays
• Cut app cold start from 4.2s to 1.9s, measured across the 5 most common devices
• Projects: maintain an open source SwiftUI form validation library with 340 GitHub stars used in 2 shipped apps (see GitHub)

• Built Kotlin features for a workout tracking app with 1.6M downloads and a 4.6 star rating
• Shipped offline workout sync used by 200,000 weekly users, cutting sync-related 1 star reviews by two thirds
• Introduced Jetpack Compose on 3 new feature areas and MVVM across the app, cutting average screen build time from 5 days to 2
• Set up CI that ran 1,100 unit tests per merge and cut release regressions caught in beta by half

• Built and released 4 client apps in React Native and 1 native iOS app in Swift
• Handled 9 app store submissions across both stores with zero rejections after the first
• Wrote the agency's first shared component library, reused across 3 client projects

• Own firmware for a tire pressure sensor family shipping 400,000 units a year across 3 automotive customers
• Cut sensor sleep current from 9.2uA to 3.1uA through power state redesign, extending rated battery life from 5 to 7 years
• Led the port of a 120K line C codebase from a discontinued MCU to an ARM Cortex-M4 in 8 months, passing customer qualification on the first submission
• Built a hardware-in-the-loop test rig running 900 automated cases per night, cutting field-reported firmware defects 70% over two years
• Wrote SPI, I2C, and UART drivers reused across 4 product lines, and review all driver changes for a 6 person firmware team
• Projects: maintain an open source I2C device emulator used by the team's CI and 200+ GitHub users (see GitHub)

• Wrote C++ control firmware on FreeRTOS for motor controllers used in 30,000 installed conveyor systems
• Brought bootloader update failures down from 1 in 200 to 1 in 20,000 by adding dual-bank flashing with rollback
• Built an embedded Linux gateway that pushed telemetry from 12 controller models to the cloud, shipped to 5,000 sites
• Cut regression test time from 3 days of bench work to 4 hours by scripting instruments in Python

• Wrote C drivers and USB communication code for a utility meter line shipping 100,000 units a year
• Fixed a timing fault in the metering interrupt path that had caused 0.5% of units to fail calibration, saving a scrapped production batch
• Set up the group's first Git workflow and CI build, replacing zip file versioning for 4 engineers

• Own 5 Spring Boot microservices that process 8M shipment events a day, holding availability at 99.95% across two AWS regions
• Cut p95 API latency from 480ms to 120ms by adding Redis caching and rewriting 3 N+1 Hibernate queries
• Moved the team from monthly to daily releases by building a Kafka-based event pipeline and a CI/CD gate that blocks merges under 85% coverage
• Mentored 3 junior developers and cut average pull request review time from 2 days to 6 hours

• Built REST APIs in Spring Boot for a payments platform serving 1.2M accounts, backed by PostgreSQL and Flyway migrations
• Reduced a nightly reconciliation batch from 90 minutes to 22 by parallelizing with a thread pool and indexing 4 hot tables
• Raised unit test coverage on the core ledger module from 40% to 88% with JUnit and Mockito

• Build Django and FastAPI services that serve 12M analytics API calls a day for 60 internal dashboards
• Cut a daily ETL job from 3.5 hours to 40 minutes by moving from row loops to Pandas batch operations and Celery workers
• Raised pytest coverage from 52% to 90% and added type hints across 30 modules, dropping production errors 35%
• Containerized 6 services with Docker and set up a GitHub Actions pipeline that deploys to AWS ECS on merge

• Built a Flask REST API and PostgreSQL schema for a scheduling product used by 25,000 monthly users
• Added Redis caching that cut average response time from 340ms to 90ms on the busiest endpoints
• Wrote 220 unit tests and automated a manual weekly report, saving the team about 5 hours a week

• Own 8 ASP.NET Core services and the SQL Server schema behind a policy platform 3,000 agents use daily
• Cut a quoting endpoint from 2.1s to 400ms by rewriting 5 Entity Framework queries and adding an indexed view
• Migrated a legacy .NET Framework monolith to .NET Core in 9 months with zero unplanned downtime, using the strangler pattern
• Built an Azure DevOps pipeline with automated xUnit tests that cut release time from a day to 40 minutes

• Built Angular and C# features for a patient portal serving 200,000 members
• Added T-SQL stored procedures and indexes that dropped a reporting query from 45s to 3s
• Wrote integration tests for 40 endpoints, raising coverage on the claims module to 82%

• Own 6 NestJS services behind a checkout flow that processes $30M a year, backed by MongoDB and Redis
• Cut order API p99 latency from 700ms to 150ms by adding Redis caching and a connection pool to MongoDB
• Moved 4 REST endpoints to GraphQL, cutting mobile payload size 60% and round trips per screen from 5 to 1
• Wrote 300 Jest tests and set a merge gate at 90% coverage on payment code, holding checkout incidents to zero for 3 quarters

• Built an Express and TypeScript API for a booking product serving 80,000 monthly users
• Added a Bull queue on Redis for email and webhook jobs, clearing a backlog that had reached 12,000 messages
• Containerized the stack with Docker and set up a CI/CD pipeline deploying to AWS on merge

• Own a Laravel ecommerce platform serving 4M monthly visitors and $22M in annual sales
• Cut average page render from 1.8s to 500ms by adding Redis caching, eager loading, and 6 MySQL indexes
• Built a REST API in Laravel that 3 partner apps now use, replacing a fragile nightly CSV export
• Raised PHPUnit coverage on the cart and checkout code from 35% to 80% and cut checkout bugs 45%

• Built and maintained Symfony and Laravel features for a publishing site with 1.5M monthly readers
• Migrated a legacy PHP 5 codebase to PHP 7.4, cutting memory use 30% and clearing 200 deprecation warnings
• Automated deployments with Git and a Linux shell pipeline, cutting release time from 2 hours to 15 minutes

• Scaled a Rails monolith from 5,000 to 120,000 users while cutting average response time from 600ms to 180ms
• Moved 20 slow synchronous jobs to Sidekiq, dropping request timeouts 90% during peak hours
• Rebuilt the reporting dashboard in React on a Rails API, cutting a 9-second page to under 2 seconds
• Kept RSpec coverage above 90% and used it as a deploy gate, holding production regressions to 1 per quarter

• Built Rails features and PostgreSQL schemas for a scheduling SaaS with 30,000 users
• Added 8 database indexes and query rewrites that cut a slow calendar view from 4s to 800ms
• Set up a Docker and GitHub Actions pipeline deploying to AWS, replacing a manual Capistrano process

• Own a Kafka-based event pipeline in Go that moves 2B events a day across 3 AWS regions at 99.99% durability
• Cut p99 processing latency from 220ms to 45ms by resharding topics and adding backpressure to 4 consumers
• Designed a leader-election and failover path that dropped regional recovery time from 8 minutes to under 30 seconds
• Wrote the RFC for an idempotent write layer, now adopted by 6 teams, that ended duplicate-event incidents

• Built gRPC microservices in Go and Java behind a platform serving 40M requests a day
• Moved a monolith to 12 Kubernetes services, cutting deploy blast radius and raising release frequency 5x
• Added distributed tracing and dashboards that cut mean time to detection from 20 minutes to 3

• Own 30 REST and GraphQL endpoints in Spring Boot used by 900 external integrators, documented with OpenAPI
• Ran 3 versioned API migrations with a 6-month deprecation window and zero partner-facing breakage
• Cut median API response from 260ms to 70ms with a caching layer and pagination on 8 heavy endpoints
• Added contract tests and an API Gateway rate limiter that dropped abusive traffic 95% and stopped 2 outages

• Built Spring Boot microservices and Kafka events for an integration hub connecting 40 partner systems
• Standardized error responses and pagination across 20 endpoints, cutting partner support tickets 50%
• Containerized services with Docker and deployed to Kubernetes with a CI/CD pipeline

• Own 60 stored procedures and 20 SSIS packages feeding a SQL Server warehouse 400 analysts query daily
• Cut a nightly ETL window from 5 hours to 90 minutes by rewriting 12 procedures and repartitioning 4 fact tables
• Tuned 30 slow reports with indexing and query rewrites, dropping the worst from 3 minutes to 4 seconds
• Built 15 Power BI datasets on the warehouse that replaced a manual spreadsheet process for 5 departments

• Wrote T-SQL and PL/SQL for a claims data mart serving 120 users
• Designed a star schema and SSIS loads that cut reporting latency from a day to 2 hours
• Added data quality checks that caught 200 bad records a week before they reached finance reports

• Built a Python data pipeline that cleaned and labeled 500,000 sensor readings a day for a robotics research group
• Cut a nightly processing script from 40 minutes to 9 by vectorizing with NumPy and caching intermediate results
• Wrote 60 unit tests and set up the lab's first GitHub Actions checks, catching 15 bugs before merge

• Implemented graph algorithms in C++ for a class scheduling research project used by 2 professors
• Cut a route-finding routine's runtime 70% by replacing a naive search with A* and a priority queue

• Own 2 services end to end, from React front end to Node API, serving 90,000 business users
• Led a billing redesign across 3 teams that cut failed charges from 4% to 0.8% and recovered $60K a month
• Cut a dashboard's load time from 5s to 1.3s by adding pagination, memoization, and a Redis cache
• Take a weekly on-call rotation and wrote 4 runbooks that cut average incident resolution from 50 to 20 minutes

• Shipped React and TypeScript features weekly, closing 120 tickets in the first year
• Raised Jest coverage on the reporting module from 55% to 85% and cut its escaped bugs in half

• Own the design and on-call for 4 payment services in Go moving $400M a year at 99.98% availability
• Led a ledger rewrite across 2 quarters that cut settlement time from 4 hours to 20 minutes
• Cut the platform's AWS bill $22K a month by right-sizing 30 Kubernetes workloads and moving batch jobs to spot
• Mentor 2 engineers, run the design review, and wrote 9 RFCs that set the team's service standards

• Built Go microservices and Kafka pipelines behind a fraud-check flow handling 8M transactions a day
• Added gRPC and connection pooling that cut inter-service latency from 90ms to 25ms

• Set the architecture for a platform 500 engineers build on, across 200 services and 3 clouds
• Led a multi-year move to event-driven architecture that cut cross-team incidents 60% and doubled release throughput
• Chair the architecture review board, where I have guided 40 major design decisions and 25 accepted RFCs
• Mentor 12 senior and staff engineers, 5 of whom have since reached staff or principal themselves

• Designed the service mesh and deployment platform that 120 engineers adopted across 80 services
• Cut mean time to recovery org-wide from 40 minutes to 8 by standardizing observability and on-call

• Lead a team of 9 engineers shipping a data platform used by 300 enterprise customers
• Raised on-time delivery from 60% to 90% by cutting work in progress and adding a weekly planning cadence
• Hired 6 engineers and kept voluntary attrition under 5% over 3 years, well below the company average
• Coached 2 engineers to senior and 1 to staff, and run monthly one-on-ones and quarterly growth plans for all 9

• Tech-led a team of 5 while owning the ingestion service behind a product serving 40M events a day
• Introduced design reviews and a testing standard that cut production incidents 45%

• Own 5 Java services that clear $2B a day, holding p99 latency under 50ms during market hours
• Cut settlement failures 70% by adding idempotency keys and a reconciliation job across 3 systems
• Built append-only audit logging that 2 regulatory exams cleared with zero findings
• Moved 8 services to Kubernetes with blue-green deploys, ending scheduled downtime for releases

• Built Python risk-calculation services for a lending platform managing $500M in loans
• Cut a nightly risk batch from 6 hours to 90 minutes by parallelizing across a Kafka queue
• Added 300 tests to the interest-calculation module, catching 12 rounding bugs before release

• Deliver full stack features across a C# and Angular application suite used by 2,500 warehouse staff
• Cut a shipment-tracking query from 8s to under 1s by rewriting SQL Server stored procedures and adding 5 indexes
• Replaced a manual data-entry workflow with a REST API and form, saving the operations team 30 hours a week
• Modernized 4 legacy WinForms tools to Angular web apps, cutting support tickets on them 60%

• Built Java and Spring Boot services and Angular screens for a patient-scheduling application serving 90 clinics
• Added integration tests for 50 endpoints and set up an Azure DevOps pipeline, cutting release time in half

• Own user-facing features end to end in Next.js and Node, from spec through launch and A/B test
• Shipped an onboarding redesign that raised activation from 38% to 55%, measured across 20,000 signups
• Built a referral feature that drove 12% of new signups in its first quarter
• Cut time-to-interactive on the marketing site from 4.1s to 1.2s, lifting signup conversion 18%

• Built React and Node features for a consumer app that grew from 10,000 to 90,000 users
• Set up product analytics and ran 15 A/B tests, 6 of which shipped as permanent wins
• Added a GraphQL layer that cut mobile data usage 40% on the main feed

• Own gameplay and performance systems in Unity and C# on a mobile title with 3M monthly players
• Held a steady 60fps on 5-year-old phones by pooling objects, batching draw calls, and cutting GC spikes 80%
• Cut app size 35% and load time from 12s to 4s by streaming assets and compressing 600 textures
• Built the multiplayer matchmaking service that pairs 40,000 concurrent players with under 2-second wait times

• Wrote C++ gameplay systems in Unreal Engine for a console action title that sold 400,000 copies
• Built the save and checkpoint system and cut a level-load stall from 3s to under 1s
• Profiled and fixed 30 frame-time spikes flagged in QA before ship