Edgar Sedov — Software Engineer

About

Backend-leaning full-stack engineer focused on credential-tech and secure, reliable SaaS. I work across Laravel 12 / PHP 8.5, React 18 / TypeScript 5, and Go 1.24, with PostgreSQL 17, Redis/Valkey (Horizon), Docker/Compose, and AWS (S3, SQS, CloudWatch, IAM; plus Lambda/ECS where useful). I value accuracy, secure-by-default designs, and pragmatic performance.

Skills

Laravel 12 · PHP 8.5 · DTOs · PHPStan · Pest
React 18 · TypeScript 5 · Vite · Tailwind · Vitest
Go 1.24 · gRPC
PostgreSQL 17 · Redis/Valkey · Horizon
Docker/Compose · Nginx/Angie · AWS (S3 · SQS · CloudWatch · IAM)
VC 2.0 · OID4VCI · OpenAttestation

Highlights

Credential SaaS (Accredify): Complex, multi-tenant verifiable-credentials platform (VC 2.0 / OID4VCI / OpenAttestation) with schema/versioning, status lists, and custom issuer/verification workflows; Laravel 12/PHP 8.4 + React/TS backend/FE; async pipelines via Horizon with observability.
High-scale logistics (Yandex Eats): Led releases for courier-hours limiting, batching, and a full ETA system revamp inside a large monolith; stack included PHP/Symfony, Redis, PostgreSQL, RabbitMQ, ELK—operated with Grafana/Kibana for visibility.
Enterprise ERP @ 1000+ real-time users: Delivered features and refactors in a huge modular Laravel backend (ERP) serving “1000+ inner realtime users”; cut full PHPUnit suite time from ~50 min to ~25–30 min without rewrites; LDAP auth + TLS migration.
Platform & infra modernization: Took orgs from “SSH + config-file secrets” to automated, dockerized, tag-based releases with Vault-sourced secrets; standardized Makefile workflows, DOCKER_BUILDKIT, multi-stage caching; CI/CD with tests, code-quality, coverage, and vulnerability checks.
Observability-first operations: Provisioned and ran Sentry, Grafana, Kibana/ELK, Prometheus, Fluentd, Traefik, Vault, and GitLab (with registry) via Ansible roles across projects—backed by logs, metrics, and feature-flagged rollouts.
Foundation & DevEx: Centralized code on GitLab CE with access controls; built org-wide CI/CD and blue-green deploys; shipped a highly automated Laravel e-commerce with a custom browser-based template editor and many external integrations.

Experience

Senior Software Engineer — Accredify (2024—present)

Multi-tenant credential SaaS (VC 2.0 / OID4VCI / OpenAttestation): issuer & verification workflows, schema/versioning, status lists, secure APIs, and async issuance/validation pipelines with observability.

Tech: Laravel 12 (PHP 8.5), React 18 / TS 5, PostgreSQL 17, Redis/Valkey (Horizon), Docker/Compose, AWS. Tests: Pest (PHP), Vitest (FE).

Development Lead — Green Sequoia Square Ltd (2020—2023)

Ran multi-project delivery: data-heavy features with feature flags/A-B tests; logs/metrics/monitoring; Vault-based deployments.
Moved org from manual SSH + config-secrets → dockerized, tag-based releases with secrets from Vault; standardized Makefiles and BuildKit caching.
Built GitLab CI/CD: tests, quality gates, coverage, vuln scans; documented APIs (OpenAPI 3) powering TS frontends.
Provisioned shared infra via Ansible: Sentry, Grafana, Kibana/ELK, Prometheus, Fluentd, Traefik, Vault, GitLab (+ registry).

Tech: Docker, Ansible, GitLab CI/CD, OpenAPI 3, Vault.

Senior Software Engineer — Yandex Eats (2019—2020)

Owned logistics features in a large monolith; turned product reqs into actionable epics and guided delivery.
Shipped courier-hours limiting, batching, and a full ETA system revamp; contributed to delayed assignment, internal billing, and Lavka courier mechanics.
Authored a team-wide codestyle draft; improved local setup (incl. IPv6).

Tech: PHP 7.2+/Symfony, Redis, PostgreSQL, MySQL Galera, RabbitMQ, ELK, OpenAPI 3; Tooling: Bitbucket, TeamCity, Grafana, Kibana.

Technical Lead — A3F Group (2018—2019)

Built a new REST API from scratch (affiliate marketing) with OpenAPI 3 + TDD; set up CI/CD, monitoring/backup/alerting.
Improved onboarding via reproducible local deploy scripts and Dockerized workflows.

Tech: PHP 7.2+/Laravel, Horizon, Telescope, Redis, PostgreSQL, RabbitMQ; GitLab CI/CD.

Senior Full-Stack — Gorkapstroy (2018)

Worked on a large modular ERP serving thousands of real-time users; led refactors and new features.
Cut full PHPUnit suite time from ~50 min to ~25–30 min without rewrites; migrated LDAP auth + password-recovery to TLS.

Tech: PHP 7+/Laravel, Echo (WS), Horizon, Redis, PostgreSQL, RabbitMQ; Angular (TS); GitLab CI/CD; Vault.

Full-Stack Dev & Go Programmer — Strana Kart (2016—2018)

Delivered a Laravel e-commerce with a custom web-based template editor and many external integrations (payments, FIAS, delivery).
Centralized org code in GitLab CE with structured access control; introduced CI/CD and blue-green deploys; operated in-house infra.
Adopted Golang in production (B2B SaaS for loyalty systems) incl. gRPC microservices.

Tech: Docker, Nginx, Let’s Encrypt, PHP/Laravel, Golang, gRPC, MySQL/PostgreSQL/Redis/RethinkDB.

Full-Stack Developer — S6 Studio (2015—2016)

Many projects from scratch (front + admin), heavy API integrations, refactoring obfuscated JS, and real-time debugging.

Tech: LAMP + Nginx, CodeIgniter/Kohana/Yii2/Laravel, JS/jQuery/AJAX, Bootstrap.

Selected Projects

“Nexus” issuer & a “Generic Issuer” variant (schema-driven credential pipelines, extensible status/metadata).
Personal AI assistant (privacy-first connectors, local LLM/tool-use).